Victor B. Skaar v. Robert L. Wilkie ( 2020 )


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  •           UNITED STATES COURT OF APPEALS FOR VETERANS CLAIMS
    No. 17-2574
    VICTOR B. SKAAR, APPELLANT,
    V.
    ROBERT L. WILKIE,
    SECRETARY OF VETERANS AFFAIRS, APPELLEE.
    On Appeal from the Board of Veterans' Appeals
    (Argued September 2, 2020                                                     December 17, 2020)
    Lily Halpern and Molly Petchenik, law students, with whom Michael J. Wishnie, all of
    New Haven, Connecticut, appeared for the appellant.
    Mark D. Vichich, with whom William A. Hudson, Jr., Acting General Counsel; Mary Ann
    Flynn, Chief Counsel; and Megan C. Kral, Deputy Chief Counsel, all of Washington, D.C., were
    on the brief for the appellee.
    Before BARTLEY, Chief Judge, and ALLEN and MEREDITH, Judges.
    ALLEN, Judge, filed the opinion of the Court. MEREDITH, Judge, filed an opinion
    concurring in part in the result and dissenting in part.
    ALLEN, Judge: In January 1966, a United States Air Force B-52 bomber carrying four
    thermonuclear weapons collided with another aircraft over Spain. Two of the nuclear weapons the
    B-52 was carrying crashed into the ground and exploded near the village of Palomares. The non-
    nuclear explosions of these devices spread radioactive plutonium over the Spanish countryside.
    Appellant Victor B. Skaar was one of approximately 1,400 U.S. servicemembers, most from the
    Air Force, who responded to this tragic event and participated in cleanup activities.
    In an April 14, 2017, decision, the Board of Veterans' Appeals denied Mr. Skaar service
    connection for leukopenia, which he claimed was due to exposure to ionizing radiation during the
    cleanup activities near Palomares. In addition to contesting the Board's denial of service
    connection for leukopenia before the Court, Mr. Skaar contends that the Board erred because it did
    not adjudicate what he claims is a pending appeal of a denied claim for service connection for skin
    cancer, also claimed as due to exposure to ionizing radiation.
    Mr. Skaar sought to proceed as a representative of a class of veterans who had participated
    in the Palomares cleanup challenging both the exclusion of Palomares from the list of "radiation
    risk activities" under 
    38 C.F.R. § 3.309
     as well as the accuracy of radiation dose estimates the Air
    Force provided in the context of 
    38 C.F.R. § 3.311.1
     On December 6, 2019, this Court, sitting en
    banc, held for the first time in its history that it may certify classes in the context of an individual
    appeal of a Board decision.2 In doing so, as we explain in more detail below, we rejected Mr.
    Skaar's request to proceed as a representative of a class challenging the exclusion of Palomares as
    a "radiation risk activity" under § 3.309.3 However, we concluded that his appeal could proceed as
    a class action with respect to his claim under § 3.311. The Court defined the class for which Mr.
    Skaar could serve as a representative as the following:
    All U.S. veterans who were present at the 1966 cleanup of plutonium dust at
    Palomares, Spain, and whose application for service-connected disability
    compensation based on exposure to ionizing radiation VA has denied or will deny
    by relying, at least in part, on the findings of dose estimates requested under
    
    38 C.F.R. § 3.311
    , except those whose claims have been denied and relevant appeal
    windows of those denials have expired, or those whose claims have been denied
    solely based on dose estimates obtained before 2001.[4]
    Today we address the merits of Mr. Skaar's appeal both on the claim for which we granted
    class certification as well as the issues he presses on an individual basis. We summarize our
    holdings here. Beginning with the class claim concerning radiation dose estimates, we hold that
    the Board failed to meet its obligation under 
    38 C.F.R. § 3.311
    (c) to ensure that dose estimates VA
    received from the Air Force constitute "sound scientific evidence." We will remand this issue to
    the Board so it may assess whether the dose estimates the Air Force has provided are based on
    such sound scientific evidence, providing an adequate statement of reasons or bases for the
    conclusion it reaches.
    The questions before us concerning Mr. Skaar's individual claims fall into two categories:
    (1) The various arguments appellant advances concerning his skin cancer claim, and (2) whether
    1
    See Appellant's Motion for Class Certification or Aggregate Resolution.
    2
    Skaar v. Wilkie (Skaar II), 
    32 Vet.App. 156
    , 177-78 (2019) (en banc order). We had previously held that, in
    appropriate circumstances, we would certify classes in the context of petitions. See Monk v. Wilkie, 
    30 Vet.App. 167
    ,
    174 (2018) (en banc).
    3
    Skaar II, 32 Vet.App. at 173-74.
    4
    Id. at 201.
    2
    VA has unlawfully failed to include Palomares as a "radiation risk activity" under 
    38 C.F.R. § 3.309.5
     As to appellant's skin cancer arguments, we are unable to reach the merits of those claims
    because the Board did not address them. But though we lack jurisdiction to address the skin cancer
    claim on the merits, we do have jurisdiction to determine whether the Board erred in failing to
    address it. We hold that we must remand the skin cancer claim because VA failed to provide a
    Statement of the Case (SOC) in response to a valid Notice of Disagreement (NOD) appellant filed.
    Concerning the radiation risk activity under § 3.309, we hold that we lack jurisdiction to address
    the arguments that remain after the Court's class certification decision because appellant did not
    raise them before the Agency. And, as we explain, our class certification decision resolves the
    appeal on that issue as to all other matters.
    We will proceed as follows. First, we will set out a basic statement of facts that applies
    generally to all the claims and that explains how this matter reached the Court. We will, however,
    provide more detailed facts in the context of our discussion of the specific claims later in our
    opinion. Second, we will describe the legal framework for awarding service connection for
    conditions claimed to be caused by exposure to ionizing radiation. Third, we will address the claim
    concerning radiation dose estimates under § 3.311 for which appellant represents a class. And
    finally, we will discuss appellant's two sets of individual claims concerning skin cancer and the
    lack of designation of the Palomares cleanup as a radiation risk activity under § 3.309.
    I. GENERAL BACKGROUND
    A. Factual Background
    Appellant served in the United States Air Force from November 1954 to July 1981,6 and
    he participated in and was present at the Palomares cleanup. In fact, as explained further below,
    he was in the "High 26" group of service members who had test results that, compared to test
    results of other Palomares cleanup workers, showed the highest exposure to radiation, and who
    were monitored for a period after the cleanup ended.7 In 1998, he was diagnosed with leukopenia,
    5
    As we noted, the en banc Court denied Mr. Skaar's request to represent a class with respect to the radiation risk
    activity issue under § 3.309. See id. at 173-74. However, as we explain below, the denial of class certification did not
    fully resolve this claim on an individual level.
    6
    Record (R.) at 2.
    7
    R. at 2124-28.
    3
    a decrease in white blood cell count. 8 His doctor opined that exposure to ionizing radiation
    "[h]istorically does appear to be the positive agent" causing leukopenia, but his doctor concluded
    that "we have been unable to prove this." 9 Appellant filed a claim for service connection for
    leukopenia in August 1998.10 In February 2000, VA denied his claim because leukopenia is not a
    radiogenic disease VA recognizes as resulting from a "radiation-risk activity."11
    In March 2011, appellant requested that VA reopen his claim.12 The regional office (RO)
    requested a radiation exposure opinion from the Air Force.13 In April 2012, the Air Force estimated
    that appellant's maximum total effective dose was 4.2 rem with a bone marrow committed dose of
    1.18 rem, compared to annual dose limits of 5 and 50 rem, respectively, for those working in
    occupations typically involving radiation exposure.14 Based on these estimates, the director of the
    Post 9/11 Environmental Health Program, writing for the Under Secretary for Benefits, advised in
    May 2012 that "it is unlikely that [appellant's] leukopenia . . . can be attributed to radiation
    exposure while in military service."15 The RO denied appellant's claim in June 2012.16 Appellant
    disagreed with the RO's denial and eventually perfected an appeal to the Board.17
    In October 2013, a private physician opined that appellant's leukopenia "is likely related to
    exposure to heavy radioactive material in [1966]."18 In June 2014, after the Air Force reevaluated
    its dose estimate methodologies, the Air Force provided VA with appellant's revised dose estimate,
    8
    R. at 2157.
    9
    Id.
    10
    R. at 2155.
    11
    R. at 2098.
    12
    R. at 2077.
    13
    R. at 1886. We will discuss the procedure for obtaining dose estimates in more detail below.
    14
    R. at 1888-89. A rem (roentgen equivalent man) is a unit of measurement for radiation. One unit represents "the
    dosage of an ionizing radiation that will cause the same biological effect as one roentgen of X-ray or gamma-ray
    exposure." MERRIAM-WEBSTER DICTIONARY, https://www.merriam-webster.com/dictionary/rem (last visited Sept. 9,
    2020).
    15
    R. at 1877.
    16
    R. at 1869.
    17
    During this time, appellant raised a skin cancer claim based on his exposure to ionizing radiation. We will discuss
    the procedural history of that claim below in our analysis of that matter.
    18
    R. at 39-40.
    4
    assigning him a new maximum total effective dose of 17.9 rem and a bone marrow committed
    dose of 14.2 rem.19
    In a May 2015 decision, the Board found the Air Force's revised dose estimates were new
    and material evidence warranting the reopening of appellant's claim.20 The Board remanded the
    claim to the RO because the Air Force's "revised assessment [was] significantly higher than the
    April 2012 assessment," and therefore, "another [dose estimate] opinion [was] warranted."21 In
    August 2016, the Director of Compensation Service provided a dose estimate opinion based on a
    memorandum from the Deputy Chief Consultant, Post Deployment Health Services, who had
    reviewed the June 2014 Air Force dose estimate,22 and medical literature about the medical effects
    of ionizing radiation.23 The director found appellant's dose estimate "did not exceed 175.7 rem for
    the bone surface, 69.3 for the lungs and 8.4 rem for the liver" and that appellant's leukopenia was
    less likely than not related to his radiation exposure.24 The RO again denied appellant's claim.25 In
    September 2016, a private physician opined that appellant's leukopenia was "a result of exposure
    to ionizing radiation/plutonium."26
    In the April 2017 decision on appeal, the Board denied appellant's claim seeking service
    connection for leukopenia.27 The Board first noted that leukopenia was "not listed as a disease
    specific to radiation-exposed veterans," and thus presumptive service connection under 
    38 C.F.R. § 3.309
     was "not for consideration."28 In considering the dose estimate evidence under 
    38 C.F.R. § 3.311
    , the Board found the May 2012 dose estimate opinion lacked probative value "as it was
    based on an inaccurate dose estimate."29 But, the Board found the August 2016 dose estimate
    19
    R. at 1301, 1274-75.
    20
    R. at 695-99.
    21
    R. at 698.
    22
    R. at 132.
    23
    R. at 131.
    24
    Id.
    25
    R. at 113-14.
    26
    R. at 38.
    27
    R. at 2-12.
    28
    R. at 5.
    29
    R. at 10.
    5
    "highly probative" because it "was based on a review of the entire record," while appellant's private
    medical opinions were not as probative because "none offered any rationale for their statements."30
    Recall that the 2016 dose estimate from the Director of VA's Compensation Service was based on
    the revised 2014 dose estimate from the Air Force. Appellant appealed the Board's decision to the
    Court.
    In February 2019, the Court, retaining jurisdiction over this appeal, remanded the matter
    to the Board for the limited purpose of providing a supplemental statement of reasons or bases
    addressing arguments appellant raised about whether the dose estimates constituted sound
    evidence under 
    38 C.F.R. § 3.311
    , but that the Board had failed to address.31 In a March 2019
    supplemental statement, the Board found that "on its face [the June 2014 revised dose estimate the
    Air Force provided] is based on sound scientific evidence" because it "was based on then recently
    re-evaluated internal processes which were initiated to ensure a comprehensive and consistent
    approach to dose estimates," and because the revised dose estimate "considered [appellant's]
    previously reported intake values based on the application of contemporary modes in his bioassay
    data collected in the 1960's."32
    With respect to prior inconsistencies in the Air Force's dose methodologies, the Board
    stated that "just as it is prohibited from exercising its own independent judgment to resolve medical
    questions, the Board is not in a position to exercise such independent judgment on matters
    involving scientific expertise." 33 The Board explained it "is bound by regulations of the
    Department," and those regulations "provide specific instructions for obtaining dose estimates."34
    Thus, "[w]ithout an independent dose estimate, and without a rational basis to reject the competent
    findings of the Air Force," the Board found no evidentiary basis on which to grant service
    connection. 35 The Board also acknowledged that appellant could have submitted his own
    independent dose estimate but that he failed to do so.36
    30
    R. at 10-11.
    31
    Skaar v. Wilkie (Skaar I), 
    31 Vet.App. 16
     (2019).
    32
    Appellee's Response (Resp.) to the Court's February 1, 2019, Order at 4 (Mar. 29, 2019).
    33
    
    Id.
     at 5 (citing Colvin v. Derwinski, 
    1 Vet.App. 171
    , 175 (1991)).
    34
    
    Id. at 6
    .
    35
    
    Id. at 5
    .
    36
    
    Id. at 6
    .
    6
    After we received this supplemental statement from the Board, the Court certified a class
    with respect to the dose estimates but found that appellant lacked standing to pursue various other
    claims on behalf of the class, including those he asserted under 
    38 C.F.R. § 3.309
    . The en banc
    Court then returned this matter to a panel to address the merits. After the Court approved a joint
    notice plan, we held oral argument. We now decide both the class matter regarding dose estimates
    and the remainder of appellant's individual arguments.
    B. Legal Landscape for Claimed Exposure to Ionizing Radiation
    Congress recognized that for veterans who were exposed to radiation during military
    service, the procedure for establishing direct service connection was "unduly burdensome because
    many veterans were having difficulties supporting their claims for compensation."37 Thus, for
    veterans seeking compensation for diseases related to in-service exposure to radiation, Congress
    mandated and VA established special procedures to follow.38
    With these provisions in place, a veteran may establish service connection for certain
    disabilities claimed as due to in-service exposure to ionizing radiation in one of three ways: (1)
    Via the presumption of service connection for radiation-exposed veterans under 
    38 U.S.C. § 1112
    (c) and 
    38 C.F.R. § 3.309
    (d)(3)(ii); (2) by meeting certain conditions specified in 
    38 C.F.R. § 3.311
    (b) for veterans with radiogenic diseases; or (3) by satisfying the elements of standard,
    direct service connection.39 We note that in its decision the Board addressed a theory of standard,
    direct service connection, but appellant did not challenge the Board's findings before the Court.
    Therefore, this theory is not at issue.40
    The first regulatory provision, 
    38 C.F.R. § 3.309
    (d), provides a presumption of service
    connection for radiation-exposed veterans with certain listed disabilities. The regulation defines
    "radiation-exposed veteran" as one who "participated in a radiation-risk activity" and lists specific
    radiation-risk activities.41 For the purposes of this appeal, we note that the regulation does not
    37
    Hilkert v. West, 
    12 Vet.App. 145
    , 148 (1991) (en banc) (citing Wandel v. West, 
    11 Vet.App. 200
     (1998)).
    38
    See Veterans' Dioxin and Radiation Exposure Compensation Standards Act, Pub. L. No. 98-542, 
    98 Stat. 2725
    (1984).
    39
    See Rucker v. Brown, 
    10 Vet.App. 67
    , 71 (1997) (citing Combee v. Brown, 
    34 F.3d 1039
    , 1043 (Fed. Cir. 1994)).
    40
    See Pederson v. McDonald, 
    27 Vet.App. 276
    , 281-86 (2015) (en banc).
    41
    
    38 C.F.R. § 3.309
    (d)(3)(i) (2020).
    7
    include the Palomares cleanup in the regulation's list of radiation risk activities; nor does the
    regulation include leukopenia in the regulation's list of presumptive disabilities.
    Under the second regulation, 
    38 C.F.R. § 3.311
    , the veteran must first establish that he or
    she suffers from a radiogenic disease that manifested within a certain time period. 42 Once a
    claimant has established a diagnosis of a radiogenic disease within the specified period and claims
    that the disease is related to his radiation exposure while in service, VA must obtain a dose
    assessment and request exposure data from the veteran's service branch.43 For those claims that
    meet these threshold requirements, the RO is required to refer the case to the Under Secretary for
    Benefits. 44 If a condition is not recognized by regulation as a "radiogenic disease," the claim
    nevertheless must be referred to the Under Secretary for Benefits when a claimant "has cited or
    submitted competent scientific or medical evidence that the claimed condition is a radiogenic
    disease."45
    The Under Secretary for Benefits "shall consider the claim with reference to the factors
    specified in paragraph (e) of this section and may request an advisory opinion from the Under
    Secretary for Health."46 These factors include the probable dose, sensitivity of the involved tissue,
    and the time-lapse between exposure and onset of the disease.47 How VA assesses these factors –
    requiring sound medical and scientific evidence – is critical to the matter before the Court, and we
    will return to that assessment in a moment. In making the required determination, the Under
    Secretary for Benefits may request an advisory opinion from the Under Secretary for Health
    because consideration of the claim "relies heavily on medical and scientific findings and
    analysis."48 The Court has held that the Under Secretary for Benefits "is not explicitly required to
    refer to the factors listed in [§] 3.311(e), but should, rather, consult those factors as a point of
    reference when making recommendations to the [RO]."49
    42
    
    38 C.F.R. § 3.311
    (b)(2), (5) (2020).
    43
    
    38 C.F.R. § 3.311
    (a)(1)-(2); see Hilkert, 12 Vet.App. at 148.
    44
    
    38 C.F.R. § 3.311
    (b).
    45
    
    38 C.F.R. § 3.311
    (b)(5); see also Parrish v. Shinseki, 
    24 Vet.App. 391
    , 395 (2011).
    46
    
    38 C.F.R. § 3.311
    (c)(1).
    47
    
    38 C.F.R. § 3.311
    (e).
    48
    Hilkert, 12 Vet.App. at 149; see also 
    38 C.F.R. § 3.311
    (c)
    49
    Stone v. Gober, 
    14 Vet.App. 116
    , 120 (2000) (discussing Hilkert, 12 Vet.App. at 149-50).
    8
    The final determination of the Under Secretary for Benefits is then sent to the agency of
    original jurisdiction, which considers the opinion as evidence. 50 In Stone, the Court held that
    although the Under Secretary for Benefits was not required to explicitly consider each of the
    factors in § 3.311(e), "the cursory explanation provided . . . did not provide adequate rationale for
    the conclusion that there was no reasonable possibility that the veteran's cancer was caused by his
    in-service exposure as required by 
    38 C.F.R. § 3.311
    (c)(ii)."51 Thus, the Court held that the Board
    erred in relying on that opinion.52
    At oral argument, the Secretary's counsel argued that in subsections (1) and (2), § 3.311(c)
    provides the Under Secretary for Benefits with two choices: The Under Secretary may find either
    that there is sound evidence to support radiation exposure or there is no reasonable possibility that
    a veteran's disease is related to exposure.53 Though the Secretary's counsel initially appeared to
    suggest that the requirement of sound scientific and medical evidence applies only to subsection
    (1) when the evidence supports granting the claim, but not to subsection (2) when the evidence
    supports denying the claim, 54 the Secretary later conceded that the sound-evidence requirement
    functionally applies to both subsections.55
    We agree that the "sound evidence" requirement applies to both subsections (1) and (2) of
    § 3.311(c). To hold otherwise would mean that the standard for granting a claim based on exposure
    to ionizing radiation is different than the standard for denying a claim in a way that is materially
    adverse to veterans. And to hold otherwise would allow VA to deny a veteran benefits based on
    science that is not sound but only grant benefits only when the science is deemed sound. Such an
    interpretation would lead to absurd results, something courts should avoid.56 Furthermore, it is
    clear from the Board's supplemental statement and the Secretary's filings throughout this appeal
    that both understood that whether the dose estimates were sound evidence was a key consideration
    50
    
    38 C.F.R. § 3.311
    (f).
    51
    Stone, 14 Vet.App. at 120.
    52
    Id.
    53
    Oral Argument (O.A.) at 46:33-47:47, 47:50-48:14, Skaar v. Wilkie (Skaar III), U.S. Vet. App. No. 17-2574 (oral
    argument held Sept. 2, 2020), https://www.uscourts.cavc.gov/oral_arguments_audio.php.
    54
    Id.
    55
    Id. at 48:14-46.
    56
    See, e.g., McNeill v. United States, 
    563 U.S. 816
    , 822 (2011); United States v. Wilson, 
    503 U.S. 329
    , 334 (1992);
    Timex V.I., Inc. v. United States, 
    157 F.3d 879
    , 886 (Fed. Cir. 1998); Atencio v. O'Rourke, 
    30 Vet.App. 74
    , 83 (2018).
    9
    under the regulation. Our decision will proceed on this interpretation of the regulation. We have
    no occasion in this appeal to consider whether, given the regulation's express language, the quality
    of evidence under subsection (1) differs from the quality of the evidence under subsection (2), and,
    therefore, we express no views on that question.
    II. THE CLASS CLAIM: DOSE ESTIMATES AND 
    38 C.F.R. § 3.311
    A. Additional Factual Background
    In our December 2019 order dealing with class certification, the Court provided a detailed
    history of the Palomares incident and radiation exposure, and we incorporate that history here.57
    However, we will summarize that history as it relates to the matter before us. Following the
    accident involving the B-52 bomber and the detonation of the two thermonuclear bombs near
    Palomares, Spain, appellant, along with nearly 1,400 U.S. military personnel, assisted in the
    cleanup efforts. To aid the effort to monitor possible radioactive exposure, many of those who
    worked in the cleanup effort gave urine and nasal swab samples. A group of 26 service members,
    including appellant, referred to as the "High 26,"were exposed to the greatest amount of radiation
    and were monitored for 18 to 24 months following the cleanup for signs of radiogenic conditions.58
    The Air Force discontinued these monitoring efforts in December 1967 when it determined these
    service members' "health is in no jeopardy from retention of radioactive materials as a result of
    participation in the [Palomares cleanup] operation."59
    In evaluating disability claims based on ionizing radiation exposure, VA turns to the Air
    Force for information. In April 2001, a consulting firm, Labat-Anderson, evaluated the Air Force's
    dose methodology 60 and provided a report to the Air Force that established preliminary dose
    estimates for various subcategories of veterans.61 The Labat-Anderson Report (LA Report or the
    Report) stated that the recorded urine dose intakes for Palomares veterans "seemed unreasonably
    high" compared to "environmental measurements" derived from air samples gathered 15 years
    57
    Skaar II, 32 Vet.App. at 167-72.
    58
    R. at 2124-28.
    59
    R. at 2430.
    60
    See R. at 2682-2818.
    61
    R. at 2691.
    10
    after cleanup and "estimates prepared for other plutonium exposure cases – persons residing in the
    Palomares vicinity and Manhattan Project workers."62 The LA Report found that these air samples
    and comparisons "provided a basis for preparing independent estimates of intake and dose using
    representative scenarios" rather than actual recorded dose intakes. 63 After comparing the
    "independent estimates" with the actual recorded dose intakes, the Report "excluded data from the
    on-site samples and attributed more significance to samples collected at later dates for the High 26
    Group."64
    The LA Report noted its findings "represent preliminary estimates that cannot be
    considered as definite" and "recommended further study to develop credible estimates of doses
    that are compatible with those calculated from environmental data."65 Despite the caveats, the Air
    Force adopted the Report's dose estimate methodology in full.66
    In December 2013, the Air Force concluded that an evaluation of its radiation dose
    methodology revealed "inconsistencies in dose assignment over the past 12 years" since the LA
    Report.67 The Air Force found its methodology, which was based on the Report, "appeared to
    underestimate doses for some individuals" and thus the Air Force intended to "formally standardize
    [its] response methodology for radiation dose inquiries involving Palomares participants" by
    establishing dose estimates based on each veteran's specific duties.68 The Air Force further stated
    it would reevaluate individual dose estimates it had already provided Palomares veterans.69
    In the course of this appeal, further information related to the dose estimates the Air Force
    provides VA has become available. In February 2019, this Court issued a limited remand for the
    Board to provide a supplemental statement of reasons or bases addressing the dose estimates VA
    relies on for Palomares veterans.70 Appellant had the opportunity to submit more information
    62
    R. at 2701.
    63
    R. at 2691.
    64
    R. at 2795.
    65
    Id.
    66
    R. at 1580-81, 3508-511.
    67
    R. at 1580.
    68
    Id.
    69
    R. at 1581.
    70
    Skaar I, 31 Vet.App. at 18-20.
    11
    about the dose estimates to VA, which he did. Included in that information was a December 2017
    report from Dr. Frank von Hippel that called into question the Air Force's reliance on the LA
    Report.71 Dr. von Hippel concluded that "the Air Force's dose estimates have huge uncertainties
    and the maximum doses incurred by those not in the 'High 26,' could be hundreds of times higher
    than those that the Air Force has recommended to the VA for determination of benefits."72
    Additionally, in August 2020, the Secretary provided the Court with a recent report from
    the Air Force that, in part, responds to Dr. von Hippel's paper.73 In the report, the Air Force defends
    its use of dose estimate methodologies and notes that it "provides significant benefit of doubt in
    favor of veterans."74 Both the Secretary and appellant note that this recent report was not before
    the Board and that the Court lacks jurisdiction to evaluate it in the first instance.75 We refer to this
    submission merely to acknowledge its existence. In no way do we base our decision on this recent
    report.
    B. Parties' Arguments
    On behalf of the class the Court certified, appellant challenges the Air Force dose estimates
    based on the LA Report that VA relies on for Palomares veterans. He argues that pursuant to
    
    38 C.F.R. § 3.311
    (c)(2)(ii), VA is required to rely on sound scientific and medical evidence and
    that the Air Force dose estimates do not meet that standard. Thus, he asserts that VA's reliance on
    those estimates is arbitrary, capricious, an abuse of discretion or not otherwise in accordance with
    law, or, in the alternative, that VA's reliance on the estimates violates the Due Process Clause of
    the Fifth Amendment. The Secretary counters that in relying on the Air Force's dose estimates the
    Board made no clear errors of fact. He urges that we affirm the decision on appeal. Because the
    Board failed to explain whether the dose estimates constituted sound evidence, we will set aside
    the Board's decision and remand the matter for the Board to consider this issue and explain the
    bases for its determinations.
    C. Legal Background
    71
    R. at 2635-50.
    72
    R. at 2650.
    73
    See Secretary's Notice of Case Development (Aug. 25, 2020).
    74
    Id. Exhibit at 61.
    75
    See id. at 2; O.A. at 4:55-5:15.
    12
    As we noted, a veteran may seek service connection for a disability caused by exposure to
    ionizing radiation by establishing the standard elements of direct service connection. But direct
    service connection is not at issue here. Rather, here we consider that for a veteran with a disability
    caused by exposure to ionizing radiation, two regulatory paths can lead to service connection. The
    first path, provided in 
    38 C.F.R. § 3.309
    , with its focus on radiation risk activities, is not relevant
    to the class claim. The second, provided in 
    38 C.F.R. § 3.311
    , applies to Palomares veterans and
    is central to the claims of Mr. Skaar and the class he represents.
    Specifically at issue, § 3.311(c) requires the Under Secretary for Benefits to determine
    whether "sound scientific and medical evidence supports the conclusion [that] it is at least as likely
    as not" that a claimant's condition is the result of ionizing radiation exposure. "[S]ound scientific
    evidence" is defined as "observations, findings, or conclusions which are statistically and
    epidemiologically valid, are statistically significant, are capable of replication, and withstand peer
    review," and "sound medical evidence" is defined as "observations, findings, or conclusions which
    are consistent with current medical knowledge and are so reasonable and logical as to serve as the
    basis of management of a medical condition."76
    The specific question whether a dose estimate is "sound scientific evidence" is a factual
    determination that the Court reviews for clear error. 77 We may overturn the Board's factual
    findings only if there is no plausible basis in the record for the Board's decision and the Court is
    "'left with the definite and firm conviction'" that the Board's decision was in error.78 However, if
    the Court determines that the Board failed to follow applicable regulatory provisions when making
    its factual assessment about dose estimates, we will hold such a decision unlawful and set it aside
    as being "arbitrary, capricious, an abuse of discretion, or otherwise not in accordance with law."79
    Finally, the Board must include in its decision a written statement of the reasons or bases for its
    findings and conclusions, adequate to enable an appellant to understand the precise basis for the
    Board's decision as well as facilitate review in this Court.80
    76
    
    38 C.F.R. § 3.311
    (c)(3).
    77
    
    38 U.S.C. § 7261
    (a)(4); see Dyment v. West, 
    13 Vet.App. 141
    , 144 (1999).
    78
    See Gilbert v. Derwinski, 
    1 Vet.App. 49
    , 52 (1990) (quoting United States v. U.S. Gypsum Co., 
    333 U.S. 364
    , 395
    (1948)).
    79
    
    38 U.S.C. § 7261
    (a)(3)(A).
    80
    
    38 U.S.C. § 7104
    (d)(1); Allday v. Brown, 
    7 Vet.App. 517
    , 527 (1995); Gilbert, 1 Vet.App. at 56-57.
    13
    D. Analysis
    Appellant contends that the dose estimates the Air Force provided to VA and on which VA
    relied, in part, to deny service-connection claims to Mr. Skaar and the class do not constitute the
    sound medical or scientific evidence that § 3.311(c) requires. He provides detailed arguments
    regarding the science behind the Air Force's methodologies and the LA Report in particular. The
    Court, however, is limited in considering the scientific evidence presented in this matter. First, we
    have no jurisdiction to directly review what the Air Force has done to provide VA with dose
    estimates because our jurisdiction is limited to the review of final Board decisions.81 We have no
    authority to dictate to the Air Force how dose estimates are created and nothing we say should be
    construed as doing so.
    We are also constrained by our statutory duty to review what the Board has done.82 No
    matter how deferential our standard of review may be, when the Board does not explain its reasons
    for reaching a factual finding, the Court's ability to review anything is frustrated. As the United
    States Court of Appeals for the Federal Circuit held, "[t]he Court of Appeals for Veterans Claims,
    as part of its clear error review, must review the Board's weighing of the evidence. It may not
    weigh any evidence itself."83
    With these constraints in mind, we turn to how the Board assessed the dose estimates the
    Air Force provided for Mr. Skaar. In the April 2017 decision on appeal, the Board failed to address
    the methodology the Air Force used to measure appellant's radiation exposure, despite his direct
    challenge concerning that issue.84 Recognizing this error, the en banc Court retained jurisdiction
    and remanded the matter for the Board to address appellant's argument. 85 In the March 2019
    supplemental statement of reasons or bases in response to our remand, the Board found that "on
    its face" the Air Force's dose estimate constituted sound scientific evidence.86 However, the Board
    also noted that it could not make an independent judgment on "matters involving scientific
    81
    See 
    38 U.S.C. § 7266
    (a); see also Bond v. Derwinski, 
    2 Vet.App. 376
    , 377 (1992) (per curiam order).
    82
    See 
    38 U.S.C. § 7261
    (a)(3).
    83
    Deloach v. Shinseki, 
    704 F.3d 1370
    , 1380 (Fed. Cir. 2013) (emphasis in original).
    84
    R. at 106-07, 778-83.
    85
    Skaar I, 31 Vet.App. at 18-20.
    86
    Appellee's Resp. to the Court's February 1, 2019, Order at 5 (Mar. 29, 2019).
    14
    expertise" and that it was "bound by regulations of the Department," which provided specific
    instructions on obtaining dose estimates.87 The Board provided an inadequate statement of reasons
    or bases for concluding that the Air Force's dose estimate constituted sound scientific evidence.
    First, the Board's finding that the dose estimate is sound evidence "on its face" without
    more detail essentially amounts to the Board saying the dose estimate is sound "because I say so."
    In different contexts the Court has held that such a conclusion without reasoning is unacceptable
    and does not allow for meaningful judicial review.88 Relatedly, the Board's statement of reasons
    or bases for accepting the Air Force dose estimate seems internally contradictory. If the Board is
    unable to make an independent judgment on such matters, then it is unclear to the Court how it
    could also find the dose estimate sound "on its face."
    Perhaps most critically, the Board's statement of reasons or bases on this issue is deficient
    because the Board appeared to believe it was bound to accept uncritically the dose estimate the Air
    Force provided. The Board commented that it was "bound by the regulations of the Department."89
    That is certainly true. 90 But the relevant regulation imposes on VA the duty to base its
    determinations on sound scientific evidence. At oral argument, the Secretary appeared to adopt the
    Board's flawed view of its responsibility, arguing that VA is unable to change the information it
    receives from the Air Force and is bound by it.91 This view is flawed because it is not consistent
    with § 3.311, which, as we have noted, provides that VA is responsible for determining whether
    the evidence on which it relies is sound. It may be that VA cannot change the estimate the Air
    Force provides, but that does not mean it may ignore its obligation to ensure that the evidence on
    which it relies is sound. After all, the dose estimate is at base nothing more than a piece of evidence
    that the Board must consider in its role as factfinder. Other regulations specifically mandate that
    on various matters VA is bound by findings of the Department of Defense or the service
    branches.92 VA knows how to write regulations making other agencies' determinations binding on
    87
    Id.
    88
    See, e.g., Cantrell v. Shulkin, 
    28 Vet.App. 382
    , 392 (2017).
    89
    Appellee's Resp. to the Court's February 1, 2019, Order at 5.
    90
    
    38 U.S.C. § 7104
    (c).
    91
    O.A. at 39:24-59.
    92
    See 
    38 C.F.R. § 3.1
    (m) (2020) (providing that a "service department finding that injury, disease, or death occurred
    in line of duty will be binding" on VA); 
    38 C.F.R. § 3.12
    (a) (2020) ("A discharge under honorable conditions is
    binding on [VA] as to character of discharge."); see also Duro v. Derwinski, 
    2 Vet.App. 530
     (1992) (holding that
    15
    itself. But VA did not do so in § 3.311, and VA is therefore required to do more than simply accept
    the Air Force's determinations as to dose estimates.
    We agree with the Board's determination that whether the dose estimate evidence before it
    is sound may require scientific expertise beyond what the Board can provide independently.93 But
    that does not mean that the Board may abdicate its responsibility to assess whether the evidence
    before it is "sound." After all, it is the Board's responsibility, as factfinder, to determine the
    credibility and weight to be given to the evidence before it.94 In fact, the definition of "sound
    scientific evidence" in § 3.311(c) requires an understanding of what is statistically significant in
    dose estimate testing and whether such testing is capable of replication and can withstand peer
    review. And though the Court recognizes that it may not be proper for the Board to opine on such
    scientific determinations, just as it may not make its own independent medical judgments,95 that
    recognition does not mean that the Board can simply accept what the Air Force or any entity says
    about a dose estimate. Rather, it means that the Board should seek appropriate evidence to make
    its decision, just as it does with respect to medical matters. The type of expert assistance the Board
    may need will depend on the facts before it, just as it does when the Board assesses medical
    matters.
    The problem here is that the Board did not provide any explanation beyond asserting that
    it could not make an independent determination about whether the Air Force dose estimate was
    sound, other than an unexplained finding that it was sound "on its face." In sum, the Board must
    provide more in the way of explaining how and why it found the Air Force dose estimate sound
    evidence if the Board relies on that evidence to deny appellant's claim. Because it did not do so,
    remand is required.96
    pursuant to 
    38 C.F.R. § 3.203
     a service department finding as to qualifying service for VA benefits is binding on VA).
    93
    Cf. Colvin v. Derwinski, 
    1 Vet.App. 171
    , 172 (1991) (holding that the Board "must consider only independent
    medical evidence to support [its] findings rather than provide [its] own medical judgment in the guise of a Board
    opinion").
    94
    See Washington v. Nicholson, 
    19 Vet.App. 362
    , 369 (2005); Owens v. Brown, 
    7 Vet.App. 429
    , 433 (1995).
    95
    See Kahana v. Shinseki, 
    24 Vet.App. 428
    , 434-35 (2011); Colvin, 1 Vet.App. at 172.
    96
    See Stone, 14 Vet.App. at 120.
    16
    To guide the Board on remand,97 we underscore that if the Board without analysis simply
    accepts the Air Force's determinations, the Board fails to follow an applicable regulatory provision.
    Such a lack of reasoning renders a Board decision "arbitrary, capricious, an abuse of discretion, or
    otherwise not in accordance with law."98 In determining whether agency action is arbitrary and
    capricious under the Administrative Procedures Act (APA), courts look to the agency's reasoned
    decisionmaking concerning the action at issue. 99 Under section 7261, our review of Board
    decisions is functionally equivalent to "arbitrary and capricious" review under the APA. 100 In
    Motor Vehicle Manufacturers Association of the United States v. State Farm Insurance, perhaps
    the leading case on "arbitrary and capricious" review, the Supreme Court held that the National
    Highway Traffic Safety Administration's (NHTSA's) rescission of crash protection requirements
    was arbitrary and capricious,101 because the NHTSA had failed both to address the change fully
    and to explain why it had ignored some of the research before it.102 The Court explained that "the
    agency must examine the relevant data and articulate a satisfactory explanation for its action
    including a rational connection between the facts found and the choice made."103
    VA has "never provided a clear and coherent explanation" for relying on the Air Force dose
    estimates, despite the regulatory requirement, that is, the requirement in § 3.311, that VA
    determine whether the evidence on which it relies is sound.104 When reviewing a different agency
    action, the Court of Appeals for the District of Columbia Circuit captured well the situation we
    face: "We do not mean to suggest that the record mandates a conclusion contrary to the agency's.
    Rather we simply find that [the agency] has never articulated the standards that guided its
    analysis." 105 As we have said, here remand is required for the Board to provide an informed
    97
    See Quirin v. Shinseki, 
    22 Vet.App. 390
    , 396 (2009).
    98
    
    38 U.S.C. § 7261
    (a)(3)(A) (requiring the Court to hold unlawful and set aside Board decisions that are "arbitrary,
    capricious, an abuse of discretion, or otherwise not in accordance with law").
    99
    See Motor Vehicle Mfrs. Ass'n of the U.S., Inc. v. State Farm Ins., 
    480 U.S. 29
    , 42-43 (1983).
    100
    See Gilbert, 1 Vet.App. at 58 (relying on the definition of "arbitrary and capricious" provided in State Farm).
    101
    Id.
    102
    Id. at 43.
    103
    Id. at 43 (internal quotation marks omitted).
    104
    See Tripoli Rocketry Ass'n v. Bureau of Alcohol, Tobacco, Firearms, & Explosives, 437F.3d 75, 81 (D.C. Cir. 2006)
    (applying the "reasoned decisionmaking" standard).
    105
    Id.
    17
    analysis about whether the Air Force dose estimate is sound medical or scientific evidence
    sufficient to facilitate judicial review and avoid arbitrary and capricious decisionmaking.106
    We recognize that, at oral argument, the Secretary's counsel offered a detailed explanation
    of the history of the Air Force dose estimate methodology.107 The Court appreciates the time and
    effort counsel put into gaining an understanding the complex science at issue here and into
    discussing this issue during oral argument. However, it ultimately is not his prerogative to explain
    what the Board did not. As we have often said, the Secretary cannot make up for the Board's
    deficient statement of reasons or bases.108
    In sum, we hold that § 3.311(c) requires that VA determine whether the dose estimates
    provided by the Air Force constitute sound medical and scientific evidence. Because the Board did
    not provide an adequate statement of reasons or bases for its determination regarding this question,
    remand is required.
    Because this holding applies to the certified class, we pause for a moment to address the
    our dissenting colleague's concerns with respect to certifying the class and applying our holding
    as to the class members. First, our colleague disputes our jurisdiction to decide the claims of class
    members and to consider information obtained as result of the Court's limited remand. The en banc
    Court has addressed these matters in its class certification proceedings, and we are not at liberty to
    revisit them today. Relatedly, our dissenting colleague suggests that the Court decertify the class
    in light of our decision to remand Mr. Skaar's claim. Again, we are not inclined to revisit the class
    certification, because neither party has asked us to do so. Furthermore, we see no change in the
    circumstances that led the en banc Court to certify the class in the first place. Finally, to the extent
    that our dissenting colleague raises concerns as to our applying our holding to the class, at this
    stage in the litigation these concerns are premature. Our holding at this stage is unremarkable –
    the decision on the class claim applies to the class. It may be that at some point this panel or another
    106
    See Tucker v. West, 
    11 Vet.App. 369
    , 374 (1998).
    107
    O.A. at 29:10-33:40.
    108
    See In re Lee, 
    277 F.3d 1338
    , 1345-46 (Fed. Cir. 2002) ("[C]ourts may not accept appellate counsel's post hoc
    rationalization for agency action." (quoting Burlington Truck Lines, Inc. v. United States, 
    371 U.S. 156
    , 168 (1962)));
    McCray v. Wilkie, 
    31 Vet.App. 243
    , 258 (2019) ("[T]he Secretary's impermissible post-hoc rationalization cannot
    make up for shortcomings in the Board's assessment."); Simmons v. Wilkie, 
    30 Vet.App. 267
    , 277 (2018) (holding that
    the "Court cannot accept the Secretary's post-hoc rationalizations" to cure the Board's reasons-or-bases errors); Smith
    v. Nicholson, 
    19 Vet.App. 63
    , 73 (2015) ("[I]t is not the task of the Secretary to rewrite the Board's decision through
    his pleadings filed in this Court.").
    18
    could be called on to interpret how this decision applies in another context, perhaps in connection
    with an action brought to enforce our decision. On the other hand, there may never be a case in
    which the Court is called on to address the issue. And though we cannot predict such a situation
    will arise, we know one thing for certain: The time to consider the dissent's concerns is decidedly
    not today.
    III. INDIVIDUAL CLAIM: SKIN CANCER
    A. Additional Factual Background
    During a January 2013 VA examination, the examiner diagnosed appellant with skin
    cancer.109 Appellant requested that his case be reviewed to determine whether his skin cancer was
    linked to his exposure to ionizing radiation. VA obtained a dose estimate. That dose estimate found
    the total probability of causation between his skin cancer and his radiation exposure to be
    35.13%.110 In March 2014, the RO denied appellant's skin cancer claim.111
    In a May 2014 statement, appellant requested that VA "move on with the important issues"
    and noted his radiation exposure and skin cancer. 112 Based on the Air Force's revised dose
    estimates, VA sought additional opinions regarding appellant's skin cancer. In a statement VA
    received in August 2014, appellant generally contested the adjudication of his Palomares-related
    claims and the regulations that governed that adjudication.113 He did not, however, identify any
    specific disability.
    In a September 2014 rating decision, VA continued to deny appellant's skin cancer claim.114
    Later that same month, appellant acknowledged receipt of that rating decision but noted he had
    not received the March 2014 rating decision.115
    In November 2014, appellant submitted several documents to VA related to his skin cancer
    claim. First, he submitted an "Application for Disability Compensation and Related Compensation
    109
    R. at 1645.
    110
    R. at 1530-35.
    111
    R. at 1358-79.
    112
    R. at 1305.
    113
    R. at 1252-53.
    114
    R. at 1180-97.
    115
    R. at 1153.
    19
    Benefits," requesting that his skin cancer claim be reopened and adjudicated based on his exposure
    to Agent Orange.116 Additionally, he submitted a letter noting that his skin cancer claim was denied
    in March and September 2014 and stating that he had "reopened the claim for service connected
    compensation as a result of [his] exposure to Agent Orange."117 With his letter he included medical
    evidence and other documents. VA construed these documents as a request to reopen the
    previously denied claim for service connection for skin cancer. In a February 2015 letter, appellant
    again disputed the denial of his skin cancer claim and provided a summary of the evidence he
    believed warranted granting the claim.118
    In an August 2015 rating decision, the RO denied reopening.119 The evidence of record
    does not show, nor does appellant argue, that he appealed the August 2015 rating decision.
    B. Parties' Arguments
    Appellant raises several substantive arguments regarding how VA adjudicated his skin
    cancer claim. First, he contends that VA's refusal to include basal cell skin cancers and melanomas
    as radiation-exposure diseases under 
    38 C.F.R. § 3.309
    (d)(2) is arbitrary, capricious, an abuse of
    discretion, or not otherwise in accordance with law under the APA. 120 He also asserts that VA
    violated the APA by changing its skin cancer causation analysis without providing him notice. He
    further argues that the Board violated its duty to assist by failing to consider all evidence of record
    in denying his skin cancer claim. Recognizing that the Court may not be able to reach these
    substantive arguments, appellant argues in the alternative that the Board erred in failing to consider
    whether he had appealed the denial of his skin cancer claim. He points to several different
    documents that he alleges could be construed as NODs challenging the March and September 2014
    rating decisions that denied his skin cancer claim.121 The Secretary responds that the Court does
    not have jurisdiction over this matter in any respect because the Board did not address it.
    116
    R. at 819-21.
    117
    R. at 758.
    118
    Supplement to the Record of Proceedings at 727.
    119
    R. at 178-209.
    120
    As we explained above, section 7261, not the APA, governs this Court's review of whether VA action was arbitrary
    and capricious. However, the standard under both statutes is materially the same. In his reply brief, appellant clarified
    that he raised his challenge under both the APA and section 7261. See Reply Brief at 9.
    121
    Reply Br. at 2-5.
    20
    We hold that we are unable to reach appellant's arguments on the merits because the Board
    did not consider the skin cancer claim; the Board addressed only appellant's claim for service
    connection for leukopenia. Our jurisdiction is limited to review of final Board decisions, and here,
    there is nothing to review about skin cancer. 122 However, we conclude that appellant submitted a
    valid NOD with respect to the skin cancer denial and will remand the matter for the issuance of an
    SOC.
    C. Legal Background
    Under the regulations in effect when appellant submitted the documents he argues are
    NODs, 123 VA defined an NOD as "[a] written communication from a claimant or his or her
    representative expressing dissatisfaction or disagreement with an adjudicative determination by
    the agency of original jurisdiction and a desire to contest the result."124 An NOD "must be in terms
    which can be reasonably construed as disagreement with that determination and a desire for
    appellate review," but "special wording is not required."125 As with all submissions, in determining
    whether an NOD has been filed, "'VA has always been, and will continue to be, liberal in
    126
    determining what constitutes [an NOD].'"                       Thus, "[i]n determining whether a written
    communication constitutes an NOD, the Court looks at both the actual wording of the
    communication and the context in which it was written."127
    "[A]n NOD initiates appellate review in the VA administrative adjudication process."128 If
    a claimant files an NOD and no SOC is furnished in response, then the claim remains pending in
    122
    See 
    38 U.S.C. § 7252
    (a).
    123
    The Court notes that, in September 2014, VA amended § 20.201 to require the filing of an NOD on a standard
    form. See Standard Claims and Appeals Forms, 
    79 Fed. Reg. 57,660
     (Sept. 25, 2014). That requirement applies "only
    with respect to claims and appeals filed 180 days after the date th[e] rule [was] published in the Federal Register as a
    final rule," i.e., after March 24, 2015. 
    Id. at 57,686
    . This revision is not applicable here.
    124
    
    38 C.F.R. § 20.201
     (2014).
    125
    
    Id.
    126
    Palmer v. Nicholson, 
    21 Vet.App. 434
    , 437 (2007) (quoting 
    57 Fed. Reg. 4088
    , 4093 (Fed. 3, 1992)).
    127
    Jarvis v. West, 
    12 Vet.App. 559
    , 561 (1999).
    128
    Mason v. Brown, 
    8 Vet.App. 44
    , 54 (1995) (citing 
    38 U.S.C. § 7105
    ); Holland v. Gober, 
    10 Vet.App. 433
    , 436
    (1997).
    21
    appellate status.129 The Court reviews de novo whether a timely NOD has been filed.130 When
    presented with evidence of a timely NOD to which the RO has not responded, the proper remedy
    is for the Court to vacate the Board decision and remand the matter for the Board to address it and
    order the appropriate procedural compliance.131 Thus, the Secretary's arguments regarding the
    Court's lack of jurisdiction are not correct. We have jurisdiction "where the Board failed to address
    a claim or matter even though a valid NOD has been filed as to an RO's adverse decision on that
    claim or matter."132
    D. Analysis
    Our analysis turns on the November 2014 letter appellant submitted to VA, along with the
    evidence he attached to it and the claim form he submitted that same month.133 Although in his
    November 2014 submission appellant requested that his denied skin cancer claim be reopened and
    considered in light of his exposure to Agent Orange, his submission could not constitute a request
    to reopen a previously denied claim because the submission was filed within the 1-year period to
    appeal the March and September 2014 denials and those denials had not yet become final.134 "[A]
    claim becomes final and subject to a motion to reopen only after the period for appeal has run."135
    In Jennings v. Mansfield, the appellant challenged a Board decision finding no clear and
    unmistakable error in a 1954 rating decision that found a doctor's letter was not a request to
    reopen.136 The Federal Circuit affirmed a decision of this Court affirming the Board because it
    held that the rating decision would not have become final at the time the letter was submitted.137
    The court held that "a claim becomes final and subject to a motion to reopen only after the period
    129
    See Tablazon v. Brown, 
    8 Vet.App. 359
    , 361 (1995).
    130
    See Fenderson v. West, 
    12 Vet.App. 119
    , 132 (1999); Beyrle v. Brown, 
    9 Vet.App. 24
    , 28 (1996).
    131
    Anderson v. Principi, 
    18 Vet.App. 371
    , 374 (2004); Manlincon v. West, 
    12 Vet.App. 238
    , 240-41 (1999);
    Fenderson, 12 Vet.App. at 132; Holland, 10 Vet.App. at 36.
    132
    Anderson, 18 Vet.App. at 378 (Steinberg, J., concurring); see also Barringer v. Peake, 
    22 Vet.App. 242
    , 244 (2008)
    (Court has jurisdiction to review whether the Board erred in failing to address a reasonably raised claim).
    133
    See R. at 758, 819-21.
    134
    
    38 U.S.C. § 7105
    (b); see Young v. Shinseki, 
    22 Vet.App. 461
    , 466-67 (2009).
    135
    Jennings v. Mansfield, 
    509 F.3d 1362
    , 1367-68 (Fed. Cir. 2007).
    136
    
    Id. at 1367
    .
    137
    
    Id. at 1368
    .
    22
    for appeal has run. Any interim submissions before finality must be considered by the VA as part
    of the original claim."138 Relying on Jennings, this Court in Young held that a document received
    within one year of a September 1996 rating decision could not constitute a claim to reopen because
    the rating decision was not yet final.139 Because the Board and the Court on de novo review also
    found the document did not constitute an NOD, appellant in that case was not entitled to an earlier
    effective date based on a unadjudicated claim.140
    Similarly, here, appellant's November 2014 letter was received within 1 year of the March
    and September 2014 rating decisions, when neither had yet become final. Thus, at the time of the
    November 2014 letter, there was no prior final decision to reopen and his submission cannot
    constitute a request to reopen. Instead, the filing must be considered by VA as part of the original
    claim. 141 Having determined that the November 2014 letter was improperly adjudicated as a
    request to reopen, we now turn to whether it constitutes an NOD.
    When we view the November 2014 letter in the context of the record as a whole, we hold
    that appellant's November 2014 letter, considered with the new claim form and medical evidence
    attached to the letter, qualifies as a valid NOD.142 Appellant was pro se at the time, requiring us to
    sympathetically read his submissions.143 Doing so, it seems to us that he disagreed with the RO's
    denial of his claim.144 In the document, he explicitly refers to the March and September 2014 rating
    decisions that denied service connection for his skin cancer claim and expresses disagreement with
    those decisions. Appellant does not expressly call his submission an NOD, instead requesting
    reopening, but the regulation does not require any special wording.145 Furthermore, in VA's pro-
    veteran, nonadversarial system, if there was a question as to what he intended to do in submitting
    the letter, VA could have inquired as to his intentions.
    138
    
    Id.
    139
    22 Vet.App. at 466.
    140
    Id. at 466-67.
    141
    Jennings, 509 F.3d at 1368.
    142
    See R. at 758.
    143
    See Comer v. Peake, 
    552 F.3d 1362
    , 1367 (Fed. Cir. 2009).
    144
    R. at 758.
    145
    
    38 C.F.R. § 20.201
    .
    23
    Although appellant requested reopening of his skin cancer claim in the November 2014
    letter, we hold that the submission could not be a request to reopen because the March and
    September 2014 rating decisions had not yet become final. Because the November 2014 letter was
    a written communication that expressed disagreement with the RO's denial of his skin cancer
    claim, referenced the March and September 2014 rating decisions, and showed an intent to
    continue to pursue benefits for his skin cancer, we further hold that the November 2014 letter
    meets the applicable regulatory requirements for an NOD instead. And, because no SOC was ever
    issued regarding appellant's skin cancer claim and the Board did not address the matter, the proper
    remedy is to remand the matter for the Board to address it and, if needed, order the required
    procedural development.146
    IV. INDIVIDUAL CLAIM: RADIATION RISK ACTIVITY
    A. Parties' Arguments
    Finally, appellant argues that the Palomares incident should be a radiation-risk activity
    recognized in 
    38 C.F.R. § 3.309
    (d) and that its exclusion is arbitrary and capricious or constitutes
    a violation of due process. We have already held in the context of our class certification order that
    he lacks standing to make this argument based on his leukopenia diagnosis because leukopenia is
    not included as a condition presumptively caused by exposure to ionizing radiation. 147 That
    decision meant appellant could not represent a class challenging § 3.309's exclusion of Palomares
    as a radiation risk activity based on the denial of a benefit for a presumptive condition. It also
    effectively validated the Board's conclusion that appellant was not entitled to service connection
    because leukopenia was not a listed condition under § 3.309.148 But our decision on that question
    left one argument from appellant unresolved because it was not relevant to the class certification
    question issue the Court addressed.
    Specifically, appellant contends that even though he does not have one of the conditions
    under § 3.309 for which service connection based on ionizing radiation exposure is presumed, VA
    146
    See Anderson, 18 Vet.App. at 374; Fenderson, 12 Vet.App. at 132; Holland, 10 Vet.App. at 436; see also 
    38 C.F.R. § 19.38
     (2020) ("When a case is remanded by the Board of Veterans' Appeals, the agency of original jurisdiction will
    complete the additional development of the evidence or procedural development required.").
    147
    Skaar II, 32 Vet.App. at 173-74.
    148
    R. at 5.
    24
    still should have considered whether the Palomares cleanup was a radiation risk activity to allow
    his inclusion on the Ionizing Radiation Registry (IRR). The IRR, maintained by the Veterans
    Health Administration (VHA), allows access to health examinations for those who are part of the
    program. Although he acknowledges that leukopenia is not a presumptive condition included in
    § 3.309, appellant asserts that he should have access to the periodic examinations under the IRR
    program. The Secretary contends that the Court lacks jurisdiction over this matter because the
    Board did not address it. We agree with the Secretary that this issue raises a jurisdictional
    impediment and we will dismiss this aspect of the appeal.
    B. Analysis
    The VHA established the IRR to provide "free clinical evaluations (history, physical and
    ancillary testing) and health risk communication for eligible Veterans with a history of ionizing
    radiation exposure during qualifying military service."149 The IRR was also set up to maintain a
    database of those exposed to ionizing radiation during military service.150 The IRR's definition of
    "radiation risk activity" is the same as that provided in § 3.309, which, as we have made clear,
    does not include Palomares.151 The VHA directive establishing the program notes that
    [e]nrolled Veterans with health concerns related to ionizing radiation who do not
    qualify as participating in "radiation at-risk activities" are encouraged to discuss
    their concerns with their primary care provider who may consult or schedule an
    appointment with an Environmental Health Clinician to discuss their concerns.
    However, these Veterans are not eligible for inclusion in the registry database.152
    In the April 2017 decision on appeal, the Board addressed service connection for
    leukopenia and no other claim. The Board acknowledged that leukopenia was not a presumptive
    condition and ended its discussion of § 3.309.153 Appellant makes no argument about this finding
    and we see no error with it. Because appellant does not argue that he has a presumptive condition
    149
    VHA Directive 1301 (Apr. 6, 2017).
    150
    Id.
    151
    Id. at 1.
    152
    Id. at 8.
    153
    R. at 5.
    25
    under § 3.309, he makes no argument about the decision the Board actually made. So, we deem
    him to have abandoned an appeal as to that decision.154
    As to his IRR-exclusion argument, the Board did not address this issue, nor did appellant
    or the record reasonably raise it below. Indeed, there is no evidence in the record that suggests that
    appellant has ever applied to be included on the IRR or that he mentioned the issue to VA. Because
    (1) participation in the Palomares cleanup is not considered a radiation-risk activity, (2)
    leukopenia, the disability before the Board, is not a presumptive condition under § 3.309, and
    (3) appellant was not eligible for inclusion in the IRR, the issue was not reasonably raised below.
    Therefore, the Board was not obligated to address it, and the Court cannot reach this issue.155
    V. APPELLANT'S RIGHTS ON REMAND
    Because the Court is remanding appellant's leukopenia and skin cancer claims, on remand,
    appellant may submit additional evidence and argument and has 90 days to do so from the date of
    VA's postremand notice.156 The Board must consider any such additional evidence or argument
    submitted.157 The Board must also proceed expeditiously.158
    VI. CONCLUSION
    After consideration of the parties' briefs, oral arguments, the record on appeal, and the
    governing law, the Court takes the following actions concerning the class and individual claims
    on appeal concerning the April 14, 2017, Board decision:
    CLASS CLAIM
    The Court SETS ASIDE the April 14, 2017, Board decision denying service connection
    for leukopenia and REMANDS the matter for the Board to readjudicate appellant's claim under
    154
    See Pederson, 27 Vet.App. at 281-86.
    155
    See 
    38 U.S.C. § 7252
    (a) (providing this Court with "exclusive jurisdiction to review decisions of the Board of
    Veterans' Appeals"); see also Ledford v. West, 
    136 F.3d 776
    , 779 (Fed. Cir. 1998) ("[T]he court's jurisdiction is
    premised on and defined by the Board's decision concerning the matter being appealed.").
    156
    Kutscherousky v. West, 
    12 Vet.App. 369
    , 372-73 (1999) (per curiam order); see also Clark v. O'Rourke,
    
    30 Vet.App. 92
     (2018).
    157
    Kay v. Principi, 
    16 Vet.App. 529
    , 534 (2002).
    158
    38 U.S.C. §§ 5109B, 7112.
    26
    § 
    38 C.F.R. § 3.311
     in accordance with this opinion. This portion of our decision applies to the
    class certified in this matter, specifically to the following:
    All U.S. veterans who were present at the 1966 cleanup of plutonium dust at
    Palomares, Spain, and whose application for service-connected disability
    compensation based on exposure to ionizing radiation VA has denied or will deny
    by relying, at least in part, on the findings of dose estimates requested under
    
    38 C.F.R. § 3.311
    , except those whose claims have been denied and relevant appeal
    windows of those denials have expired, or those whose claims have been denied
    solely based on dose estimates obtained before 2001.
    INDIVIDUAL CLAIMS
    The Court SETS ASIDE the Board's April 14, 2017, decision with respect to appellant's
    skin cancer claim and REMANDS the matter for further proceedings consistent with this opinion.
    We DISMISS for lack of jurisdiction the Board's decision with respect to appellant's claims
    concerning 
    38 C.F.R. § 3.309
    .
    MEREDITH, Judge, concurring in part in the result and dissenting in part: I agree with the
    majority that the April 14, 2017, decision of the Board of Veterans' Appeals (Board) denying the
    appellant's disability compensation claim for leukopenia must be set aside and the matter remanded
    for further adjudication and development, and I agree that the Court lacks jurisdiction to address
    the appellant's arguments related to 
    38 C.F.R. § 3.309
     based on potential inclusion in the Ionizing
    Radiation Registry (IRR).159 I write separately for three reasons: First, I cannot join the majority's
    analysis concerning the appellant's leukopenia claim and the scientific validity of dose estimates
    obtained by VA pursuant to 
    38 C.F.R. § 3.311
    , because of the materials on which the majority
    relies and the majority's treatment of the class. My position remains, as stated throughout these
    proceedings, that the Court does not have jurisdiction over most of the class members and further
    lacks jurisdiction to consider the nearly 3400 pages of evidence and argument submitted to the
    159
    Although I concur in the determination regarding the Court's lack of jurisdiction, I do not adopt the panel's
    analysis or ultimate conclusion to "DISMISS for lack of jurisdiction the Board's decision with respect to appellant's
    claims concerning 
    38 C.F.R. § 3.309
    ." Ante at 27 (emphasis added). The Board addressed § 3.309 solely with respect
    to the appellant's claim for leukopenia, finding that presumptive service connection was not warranted because
    leukopenia is not a presumptive condition, Record (R.) at 5, a theory the appellant abandoned here on appeal. See
    Pederson v. McDonald, 
    27 Vet.App. 276
    , 285 (2015) (en banc). The Board did not address inclusion in the IRR or a
    claim for skin cancer. Because the appellant has not, in my view, established that the Board erred by not addressing
    those matters, the Court lacks jurisdiction to consider his arguments. However, there is no Board decision to dismiss.
    27
    Board following the Court's limited remand, including any Board reference to that evidence in its
    supplemental analysis and the parties' arguments based on that evidence. 160 See Henderson v.
    Shinseki, 
    562 U.S. 428
    , 434-35 (2011) (reaffirming that objections to subject matter jurisdiction
    may be raised at any time); see also Kontrick v. Ryan, 
    540 U.S. 443
    , 455 (2004). Moreover,
    although I agree that the appellant's claim for leukopenia must be remanded, the majority states
    that "[t]his portion of our decision applies to the class certified in this matter," ante at 27, without
    explaining what that means in application to the class or without discussing the propriety of
    continuing the class action.
    Second, I must respectfully dissent from the Court's conclusion that the appellant had
    submitted a valid Notice of Disagreement (NOD) with the VA regional office's (RO's) decision
    denying disability benefits for skin cancer. As explained below, the appellant's arguments
    concerning a pending NOD are late-raised and undeveloped and, in my view, legally incorrect.161
    And, finally, I am compelled to comment that the result here demonstrates that the en banc
    Court's resurrection of the limited remand mechanism, for the purpose of deciding the appellant's
    motion for class certification, turned out not to be an effective tool. More than 3 years after the
    appellant appealed the April 2017 Board decision, the panel is left with no choice but to conclude
    that the Board provided an inadequate statement of reasons or bases for its decision and to remand
    the matter for readjudication—the same relief that the en banc Court could have, and in my view,
    should have initially provided. See Skaar I, 31 Vet.App. at 29-30, 32 (Pietsch, J., dissenting); see
    also Skaar II, 32 Vet.App. at 217-18 (Falvey, J., dissenting); Skaar v. Wilkie (Skaar III),
    No. 17-2574, 
    2020 WL 3564269
    , at *3 n.6 (July 1, 2020) (Meredith, J., dissenting). Instead, the
    parties and the en banc Court expended considerable time and resources debating the efficacy of
    conducting class actions in the appellate context and the bounds of the Court's jurisdiction, without
    bringing the appellant any closer to receiving a decision that adequately addresses the merits of
    whether the dose estimates relied on by VA are based on a methodology that complies with
    
    38 C.F.R. § 3.311
    (c).
    160
    In this regard, I incorporate by reference Judge Pietsch's and Judge Falvey's respective dissents to the
    Court's limited remand order and order certifying the class, which dissents I completely joined. See Skaar v. Wilkie
    (Skaar I), 
    31 Vet.App. 16
    , 22-32 (2019) (en banc order) (Pietsch, J., dissenting); see also Skaar v. Wilkie (Skaar II),
    
    32 Vet.App. 156
    , 208-25 (2019) (en banc order) (Falvey, J., dissenting).
    161
    In the absence of an NOD placing a skin cancer claim into appellate status and a Board decision addressing
    that claim, I agree with the majority's conclusion that the Court cannot address the merits of any of the appellant's
    substantive arguments related to skin cancer and § 3.309. See ante at 21.
    28
    I. LEUKOPENIA CLAIM: VALIDITY OF DOSE ESTIMATES PURSUANT TO
    
    38 C.F.R. § 3.311
    It is well settled that the Board is required to consider all theories of entitlement to VA
    benefits that are either raised by the claimant or reasonably raised by the record. Robinson v. Peake,
    
    21 Vet.App. 545
    , 553 (2008), aff'd sub nom. Robinson v. Shinseki, 
    557 F.3d 1355
     (Fed. Cir. 2009).
    For that reason, I fully concur in the majority's decision to set aside the Board's April 2017
    decision; the Board, at that time, did not address the appellant's 
    38 C.F.R. § 3.311
     arguments. See
    R. at 1-12, 106-07, 778-83. I, however, would draw that conclusion based solely on the content of
    the April 2017 Board decision, the evidence and arguments then before the Agency, and the
    contentions raised in the appellant's initial briefing to the Court.162
    As for proceedings since that time, for the reasons stated more fully by Judge Pietsch in
    her dissent to the Court's limited remand order, see Skaar I, 31 Vet.App. at 30-32 (Pietsch, J.,
    dissenting), I continue to believe that the Court exceeded the bounds of its jurisdiction by
    remanding the matter to the Board to address the scientific validity of the methods applied in
    arriving at a dose estimate and by permitting the appellant to submit additional evidence and
    argument, yet constraining the broad discretion ordinarily afforded to the Secretary in developing
    a claim. See Douglas v. Shinseki, 
    23 Vet.App. 19
    , 22-23 (2009) (discussing the statutory and
    regulatory provisions supporting the Secretary's broad authority to develop a claim); Shoffner v.
    Principi, 
    16 Vet.App. 208
    , 213 (2002) (stating that 
    38 C.F.R. § 3.304
    (c) provides the Secretary
    "the discretion to determine how much development is necessary for a determination of service
    connection to be made"); 
    38 C.F.R. § 3.304
    (c) (2020) ("The development of evidence in
    connection with claims for service connection will be accomplished when deemed necessary."
    (emphasis added)). And, regardless of the propriety of the scope of the limited remand, "[b]ecause
    the [Notice of Appeal] triggering our jurisdiction relates only to the April 2017 Board decision,"
    our review remains constrained by statute to the 2017 Board decision and the materials then before
    the Board. Skaar I, 31 Vet.App. at 31 (Pietsch, J., dissenting); see Skaar II, 32 Vet.App. at 216-17
    (Falvey, J., dissenting).
    162
    For the reasons stated in my dissent to the panel's order denying the Secretary's motions to strike the
    attachments and related arguments to the appellant's briefs, my review would be limited to those arguments that do
    not rely on the documents attached to his briefs. See Skaar III, 
    2020 WL 3564269
    , at *3-8 (Meredith, J., dissenting).
    29
    Further, even assuming that the Court has jurisdiction to review the Board's supplemental
    statement of reasons or bases and the evidence added to the record following the Court's limited
    remand, the Board's supplemental analysis demonstrates that the Court's limited remand did not
    allow for meaningful review of the appellant's challenges to the methodologies employed by the
    Air Force and the dose estimates relied on by VA in adjudicating his claim. In this regard, it is
    noteworthy that the majority faults the Board for finding, "on its face," that the June 2014 dose
    estimate "is based on sound scientific evidence," Board Mar. 26, 2019, Supplemental Statement at
    5, but agrees at the same time "with the Board's determination that whether the dose estimate
    evidence before it is sound may require scientific expertise beyond what the Board can provide
    independently." Ante at 16.
    I do not disagree that scientific expertise may be required to adequately address the
    appellant's arguments and evidence, including the Labat-Anderson report and Dr. Frank von
    Hippel's December 2017 opinion regarding that report and the Air Force's radiation dose estimates.
    Cf. Colvin v. Derwinski, 
    1 Vet.App. 171
    , 172 (1991) (finding that the Board is prohibited from
    "provid[ing] [its] own medical judgment in the guise of a Board opinion"), overruled on other
    grounds by Hodge v. West, 
    155 F.3d 1356
     (Fed. Cir. 1998); 
    38 C.F.R. § 3.311
    (a)(3) (2020)
    (requiring VA to obtain an independent expert radiation dose estimate "[w]hen necessary to
    reconcile a material difference between an estimate of dose, from a credible source, submitted by
    or on behalf of a claimant, and dose data derived from official military records"). But, by retaining
    jurisdiction, the en banc Court, in its limited remand, prevented the Board from developing the
    evidence the panel now agrees may be necessary to adjudicate the scientific validity of the disputed
    dose estimates. See Skaar I, 31 Vet.App. at 19 (remanding the case "solely for the Board to provide
    a supplemental statement of reasons or bases" and ordering that, "regardless of the outcome of the
    Board's determination on remand, the Board shall not take any further action beyond the
    response required by this order unless and until the Court relinquishes jurisdiction over the matter"
    (bold emphasis added)). Indeed, the Board recognized these restrictions on its jurisdiction,163 and
    163
    The Board stated in relevant part:
    [A]t no time prior to the Board's April 2017 decision did the appellant offer his own independent
    dose estimate. Such a report would have been considered by the Board, and the Board would have
    been required to determine its probative value in making a decision. Without an independent dose
    estimate, and without a rational basis to reject the competent findings of the Air Force which were
    30
    the effect of those restrictions were not lost on the parties. See Appellant's Response to the Court's
    Feb. 1, 2019, Order at 1-2 (asserting that the Board ignored 3390 pages of evidence submitted on
    limited remand); Secretary's Response to the Court's Feb. 1, 2019, Order at 7-9 (arguing that the
    Board lacks authority to render decisions requiring specialized expertise and that the Board was
    precluded from obtaining any additional evidence interpreting the highly technical Labat-
    Anderson report). Thus, I would not, under the unusual circumstances of this case, conclude that
    the Board "abdicate[d] its responsibility to assess whether the evidence before it is 'sound.'" Ante
    at 16.
    The remand ordered today, including the Court's relinquishment of jurisdiction, affords the
    appellant the relief he should have received initially and the Board the opportunity to obtain and
    consider all the evidence deemed necessary to decide the claim. I would expect, after the protracted
    nature of these proceedings, that the Secretary will fulfill his statutory obligation to proceed
    expeditiously, fully consider the post-April 2017 evidence and argument added to the record, and
    develop evidence, as necessary, to fully and fairly adjudicate the appellant's § 3.311 claim.164
    relied on by various VA personnel, the Board could not find that the lay opinions offered by the
    appellant prior to the April 2017 decision outweigh the opinions offered by experts in the field.
    Board Mar. 26, 2019, Supplemental Statement at 5. And, regarding the arguments submitted following the Court's
    limited remand, the Board concluded as follows:
    [W]hile the appellant has since raised numerous challenges to the methodology used, in evaluating
    the evidence the Board is limited to the evidence that is available to it at the time a decision is
    rendered. While the appellant's October 2014 and September 2016 letters raised challenges to the
    dose estimate there was no evidence that the claimant has any expertise in the field of preparing
    dose estimates, or that he had access to the evidence considered by the United States Air Force when
    they offered their revised opinion in June 2014. As such, in April 2017 the Board had no
    evidentiary basis to reject the opinion offered by the Air Force.
    Id. (bold emphasis added).
    164
    As to whether § 3.311(c)(1)(i)'s requirement that VA rely on "sound scientific and medical evidence"
    applies equally to subsection (c)(2), the majority seems to provide conflicting statements regarding the scope of its
    opinion. On the one hand, the majority states that the requirement applies to both subsections and that "[t]o hold
    otherwise would mean that the standard for granting a claim based on exposure to ionizing radiation is different than
    the standard for denying a claim." Ante at 9. On the other hand, the majority states as follows: "We have no occasion
    in this appeal to consider whether, given the regulation's express language, the quality of evidence under subsection
    (1) differs from the quality of the evidence under subsection (2), and, therefore, we express no views on that question."
    Ante at 10. In either case, the majority's discussion in this regard appears to be dicta because the discussion is
    unnecessary to its decision, which sets aside the Board's decision based on an inadequate statement of reasons or bases.
    31
    II. CLASS CLAIM: REMEDY
    Next, although I agree that the April 14, 2017, Board decision denying disability
    compensation for leukopenia must be set aside and the appellant's individual claim remanded for
    readjudication, I cannot join the majority's conclusion that "[t]his portion of our decision applies
    to the class certified in this matter." Ante at 27. To begin, the majority provides no context for its
    declaration and, considering that this is the first time that the Court has certified a class in an
    individual appeal of a Board decision, some explanation is required. Further, although my position
    remains, as stated by Judge Falvey in his dissent to the class certification order, see Skaar II,
    32 Vet.App. at 210-15, that the en banc majority exceeded our jurisdiction when it certified a class
    to include veterans who have not yet filed a claim and veterans who have filed claims that remain
    pending before VA at any level—the so-called "Future-Future claimants" and "Present-Future
    claimants"—we are now left to surmise how the Court's decision today will affect the certified
    class. For example, given that the class issue has not yet been resolved and the Court is not
    retaining jurisdiction, who will have jurisdiction over the class after mandate issues? Is it possible
    for the class to be "pending" before VA? Would the class travel with the appellant's claim to the
    Board and, if additional development is required, to the RO? And, what effect would that have on
    the status of any class members' pending claims, or the Agency's ability to process a new claim?
    Are the class members in limbo until the Agency adjudicates, on a fully developed record, the
    appellant's challenges to the dose estimates relied on by VA?
    Under the circumstances, I would suggest that the Court instead, pursuant to its duty to
    monitor its class decision, sua sponte consider the continued propriety of maintaining the class
    action. See Amara v. CIGNA Corp., 
    775 F.3d 510
    , 520 (2d Cir. 2014) (noting that Rule 23 of the
    Federal Rules of Civil Procedure "requires courts to 'reassess . . . class rulings as the case develops,'
    and to ensure continued compliance with Rule 23's requirements" (citation omitted)); Kingery
    v. Quicken Loans, Inc., 
    2014 U.S. Dist. LEXIS 75811
    , at *2 (S.D. W. Va. June 4, 2014) ("Even
    after the court has certified a class, it 'is duty bound to monitor its class decision and, where
    certification proves improvident, to decertify, subclassify, alter, or otherwise amend its class
    certification.'" (quoting Chisolm v. TranSouth Fin. Corp., 
    194 F.R.D. 538
    , 544 (E.D. Va. 2000))).
    As stated by the en banc majority in its class certification order, "[t]he class seeks a single class-
    wide injunction ordering VA to comply with the provisions of § 3.311." Skaar II, 32 Vet.App. at
    194. But that is not the decision that the Court reaches today. Compare ante at 13-18, 26-27, with
    32
    Skaar II, 32 Vet.App at 194 (stating that, "if the class succeeds on the merits, 'injunctive relief or
    corresponding declaratory relief'—in the form of an order from this Court to the Secretary that he
    comply with the provisions of § 3.311—'is appropriate respecting the class as a whole'" (quoting
    FED. R. CIV. P. 23 (b)(2))). Rather, the Board's inadequate statement of reasons or bases frustrates
    judicial review, precluding our ability to provide the requested class-wide relief and compelling
    us to remand the matter for full readjudication without retaining jurisdiction. And, we have no
    reason to assume that further adjudication of the appellant's claim will lead to a final Board
    decision adverse to the appellant or subsequent appellate review of the class issue for which he is
    the representative. How, then, would the substantive issue be resolved for the class members?
    Further, in certifying the class, the en banc majority recognized that "class actions before
    this Court are the exception, not the rule," and laid out a nonexhaustive set of factors for
    consideration on a case-by-case basis. Skaar II, 32 Vet.App. at 196; see id. at 194-99. Although
    no one factor was identified as determinative, it is noteworthy that a factor found to weigh in favor
    of certification was the purported completeness of the record. Id. at 199. Specifically, the en banc
    majority emphasized that (1) the appellant and the class submitted scientific evidence challenging
    the validity of the Air Force's dose estimates, (2) the Court is "equipped with the Board's
    supplemental statement addressing [the appellant's] challenge to VA's adherence to § 3.311," and
    (3) the Court "require[s] no additional information to decide the class challenge on the merits." Id.
    As set forth above, the panel now reaches an appropriate but opposite conclusion. We lack
    sufficient factfinding by the Board and, as alluded to by the majority and the Board, additional
    expert scientific evidence may be required to adequately address the appellant's arguments. See
    ante at 16 (agreeing that it may not be proper for the Board to make scientific determinations and
    suggesting that the Board seek appropriate expert evidence to render an informed decision);
    Mar. 26, 2019, Supplemental Statement at 5. But see Skaar II, 32 Vet.App. at 199 (recognizing
    that class certification "could prove impractical" if the Court required a significant amount of
    additional information).
    In sum, although some of my colleagues previously considered the class action device a
    superior method for litigating the class claim, it has become even more apparent now that the
    statutory limits on our appellate jurisdiction, our lack of factfinding abilities, and an incomplete
    record render class treatment of this issue at best impractical and raise a spectrum of jurisdictional,
    procedural, and substantive complications. The Court should decertify the class.
    33
    III. SKIN CANCER
    As for the appellant's claim for skin cancer, the majority on de novo review concludes that
    he filed a timely NOD with the RO's March 2014 denial and remands the matter for issuance of a
    Statement of the Case. I disagree both with the substance of the decision as well as the majority's
    implicit acceptance of the appellant's failure to comply the Court's Rules of Practice and Procedure
    and willingness to address this late-raised argument.
    In that regard, I would stress that the represented appellant did not raise this argument in
    his opening brief.165 But see U.S. VET. APP. R. 28(a)(5). Rather, he first raised this issue of an
    unaddressed NOD in response to the Secretary's motion to strike his brief, in which the Secretary
    asserted in part that, because the Board adjudicated only a claim for leukopenia and the appellant
    failed to explain in his opening brief the basis for the Court's jurisdiction over a claim for skin
    cancer, the Court should not consider his arguments relating to skin cancer. See Secretary's
    Apr. 18, 2018, Motion To Strike at 1-2. Further, in his opposition, the appellant argued only that
    the Court has jurisdiction over the claim because May 16 and June 23, 2014, letters were sufficient
    to constitute an NOD, and the Board implicitly denied the claim. See Appellant's May 14, 2018,
    Opposition to Motion To Strike at 1-2. Not until he filed his reply brief, after the Secretary's limited
    opportunity to argue why the Court lacks jurisdiction over the skin cancer claim, did he point to
    several letters in the record—including the November 2014 letter, which the majority now deems
    a valid NOD. Compare Secretary's Br. at 13-14 (asserting that "[n]owhere in his [opening] brief
    does [a]ppellant identify any documents in the record" initiating an appeal as to skin cancer and,
    in support of his argument that the Court lacks jurisdiction, noting that, in November 2014
    correspondence, the appellant informed VA that his "'intention and desire was to have [skin cancer]
    considered within the parameters of exposure to Agent Orange, not radiation'" (emphasis added)
    (quoting R. at 758)), with Reply Br. at 3-4 (referencing six letters from May 2014 through February
    2015 as potential NODs). And, with regard to the November 2014 letter, the appellant's entire
    argument is as follows: "Mr. Skaar sent a letter on November 20, 2014[,] disagreeing with the
    denial of his skin cancer claim and asking that the VA reconsider it." Reply Br. at 4. He does not
    165
    To be clear, the appellant raised arguments in his opening brief with regard to the merits of his skin cancer
    claim; he did not, however, explain how the Court would have jurisdiction to address the merits of a claim not
    adjudicated in the Board decision on appeal or request remand on procedural grounds. Appellant's Brief (Br.) at 9-16,
    25-30 (in part requesting that the Court direct VA to grant disability benefits for skin cancer).
    34
    explicitly discuss the actual wording of that letter, clarify the context in which it was written, or
    otherwise explain why it meets the requirements of an NOD. See id.
    Unlike other cases in which the Court has exercised its discretion to hear late-raised
    arguments, see, e.g., Crumlich v. Wilkie, 
    31 Vet.App. 194
    , 202 (2019) (addressing a late-raised
    argument where "the Court was presented with a compelling allegation that the regulation VA
    ask[ed the Court] to apply conflict[ed] with the appellant's statutory rights and the Secretary's
    concessions appeared to confirm that allegation," and the Court thereafter obtained a written
    response from the Secretary), the circumstances of this case do not warrant similar treatment.166
    See Wait v. Wilkie, 
    33 Vet.App. 8
    , 19 (2020) (declining to address matters first raised during the
    rebuttal portion of oral argument); see also Carbino v. Gober, 
    10 Vet.App. 507
    , 511 (1997)
    (declining to review an argument first raised in the appellant's reply brief), aff'd sub nom. Carbino
    v. West, 
    168 F.3d 32
    , 34 (Fed. Cir. 1999) ("[I]mproper or late presentation of an issue or argument
    . . . ordinarily should not be considered.").
    However, even assuming that consideration of this issue is warranted, I cannot agree that
    the appellant's November 2014 correspondence constitutes an NOD. See ante at 22-24. The
    majority holds that "[w]hen we view the November 2014 letter in the context of the record as a
    whole, . . . [the] appellant's November 2014 letter, considered with the new claim form and medical
    evidence attached to the letter, qualifies as a valid NOD." Ante at 23. The majority states that the
    letter "explicitly refers to the March and September 2014 rating decisions, . . . expresses
    disagreement with those decisions[, and] . . . . showed an intent to continue to pursue benefits for
    his skin cancer." Ante at 23-24. Yet, neither the appellant nor the majority identify which language
    in the letter "can be reasonably construed as disagreement with [the rating decisions] and a desire
    for appellate review." 
    38 C.F.R. § 20.201
     (2014); see ante at 23-24; Reply Br. at 4.
    Further, in my view, even liberally construing the letter, when read in context, it reflects
    that the appellant did not express a desire for appellate review. Rather, after noting that his claim
    for skin cancer "began a long journey through the VA process," the appellant provided the
    following clarification regarding his intent:
    166
    In this regard, I would note that declining to address this issue is consistent with decades of caselaw from
    our Court and higher courts and would not leave the appellant without an available remedy. See Evans v. Shinseki,
    
    25 Vet.App. 7
    , 18 (2011) (citing DiCarlo v. Nicholson, 
    20 Vet.App. 52
    , 55 (2006), aff'd sub nom. Dicarlo v. Peake,
    
    280 F. App'x 988
     (Fed. Cir. 2008)) (concluding that it was not apparent from the record whether the appellant filed an
    NOD concerning claims not decided by the Board, but that the appellant remained free to raise the issue to VA).
    35
    I received a phone call from a live person at the Muskogee [o]ffice informing me
    that my claim was being forwarded to the Jackson, M[ississippi] Regional Center
    as they process all radiation-related claims. My intention and desire was to have
    that disease considered within the parameters of exposure to Agent Orange, not
    radiation.
    The skin cancers were both denied on [March 27, 2014,] and again on
    September []4, 2014, as not having been caused as a result of documented exposure
    to RADIATION.
    Therefore[,] I have reopened the claim for service[-]connected compensation as a
    result of my exposure to Agent Orange.
    R. at 758 (italics and bold emphasis added).
    The foregoing demonstrates that, to the extent that the appellant expressed disagreement
    with the rating decisions, his disagreement centered on the RO's adjudication of the wrong theory
    of entitlement. Instead of seeking appellate review of the RO's denial, the appellant unequivocally
    twice expressed his desire and intent to pursue benefits for skin cancer based on an alternative
    theory—exposure to Agent Orange. See Jarvis v. West, 
    12 Vet.App. 559
    , 561 (1999) ("In
    determining whether a written communication constitutes an NOD, the Court looks at both the
    actual wording of the communication and the context in which it was written.").
    Finally, because the appellant's arguments regarding the remaining letters are undeveloped,
    see Reply Br. at 3-5, I would conclude that he has not shown that the Board possessed jurisdiction
    over his claim for skin cancer. And, where the Board lacks jurisdiction, so does this Court. See
    Ledford v. West, 
    136 F.3d 776
    , 779 (Fed. Cir. 1998) (holding that "the court's jurisdiction is
    premised on and defined by the Board's decision concerning the matter being appealed"); see also
    Tyrues v. Shinseki, 
    23 Vet.App. 166
    , 178 (2009) (en banc) ("[T]his Court's jurisdiction is
    controlled by whether the Board issued a 'final decision'—i.e., denied relief by either denying a
    claim or a specific theory in support of a claim and provided the claimant with notice of appellate
    rights."), aff'd, 
    631 F.3d 1380
     (Fed. Cir. 2011), vacated, 
    565 U.S. 802
     (2011), reinstated as
    modified, 
    26 Vet.App. 31
     (2012) (en banc) (per curiam order), aff'd, 
    732 F.3d 1351
     (Fed. Cir.
    2013); cf. Manlincon v. West, 
    12 Vet.App. 238
    , 240-41 (1999) (exercising jurisdiction and
    concluding that, because the appellant had filed an NOD, the Board erred by referring a matter to
    the RO rather than remanding for issuance of an SOC).
    36
    IV. CONCLUSION
    For these reasons, I concur in the result with respect to the appellant's individual claim for
    leukopenia under § 3.311. I further agree with the majority's conclusions that the Court lacks
    jurisdiction to address the appellant's substantive arguments concerning skin cancer, the IRR, and
    § 3.309. I respectfully dissent from the remainder of the Court's opinion, including its application
    of the remedy to the class.
    37