Brandy Bain Jennings v. Secretary, Florida Department of Corrections ( 2022 )


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  • USCA11 Case: 21-11591    Document: 30-1      Date Filed: 12/13/2022   Page: 1 of 38
    [PUBLISH]
    In the
    United States Court of Appeals
    For the Eleventh Circuit
    ____________________
    No. 21-11591
    ____________________
    BRANDY BAIN JENNINGS,
    Petitioner-Appellant,
    versus
    SECRETARY, FLORIDA DEPARTMENT OF CORRECTIONS,
    Respondent-Appellee.
    ____________________
    Appeal from the United States District Court
    for the Middle District of Florida
    D.C. Docket No. 2:13-cv-00751-SPC-MRM
    ____________________
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    2                         Opinion of the Court                       21-11591
    Before JORDAN, BRANCH, and BRASHER, Circuit Judges.
    BRANCH, Circuit Judge:
    Brandy Bain Jennings is a Florida prisoner serving three
    death sentences for the 1995 murders of Dorothy Siddle, Vicki
    Smith, and Jason Wiggins during a robbery at the Cracker Barrel
    where Jennings formerly worked. 1 After pursuing a direct appeal
    and postconviction relief in the Florida state courts, Jennings filed
    a federal habeas petition under 
    28 U.S.C. § 2254
    , alleging, in
    relevant part, that his counsel rendered constitutionally ineffective
    assistance during the penalty phase. After the district court denied
    Jennings’s § 2254 petition on the merits, we granted a certificate of
    appealability (“COA”) on one issue: “Whether the district court
    erred in denying Jennings’s claim that his trial counsel rendered
    ineffective assistance in the penalty phase of his capital trial by
    failing to conduct further investigation into Jennings’s childhood
    and background.”
    After review and with the benefit of oral argument, we
    conclude that the Florida Supreme Court’s decision that Jennings
    failed to establish prejudice was not contrary to, or an
    unreasonable application of, clearly established federal law, and we
    affirm on that ground.
    1 Jennings is also serving 15 years’ imprisonment for the robbery.
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    21-11591                  Opinion of the Court                               3
    I.      Background
    A. Guilt Phase of the Trial
    In 1995, a Florida grand jury indicted Jennings and
    codefendant Jason Graves with three counts of premeditated
    murder and one count of robbery. 2 Public Defenders Tom Osteen
    and Adam Sapenoff were appointed to represent Jennings. The
    trial took place in October 1996. The Florida Supreme Court
    summarized the facts of this case as follows:
    Dorothy Siddle, Vicki Smith, and Jason Wiggins, all
    of whom worked at the Cracker Barrel Restaurant in
    Naples, were killed during an early morning robbery
    of the restaurant on November 15, 1995. Upon
    arriving on the scene, police found the bodies of all
    three victims lying in pools of blood on the freezer
    floor with their throats slashed. Victim Siddle’s hands
    were bound behind her back with electrical tape;
    Smith and Wiggins both had electrical tape around
    their respective left wrists, but the tape appeared to
    have come loose from their right wrists.
    Police also found bloody shoe prints leading from the
    freezer, through the kitchen, and into the office,
    2 Graves was 18 years’ old at the time of the crimes, and the State agreed to
    waive the death penalty in Graves’s case in exchange for his waiver of a motion
    for a continuance to allow him more time to prepare for a capital trial. Graves
    was convicted on all charges in a separate proceeding and sentenced to the
    only available sentence—life imprisonment.
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    4                     Opinion of the Court                 21-11591
    blood spots in and around the kitchen sink, and an
    opened office safe surrounded by plastic containers
    and cash. Outside, leading away from the back of the
    restaurant, police found scattered bills and coins, shoe
    tracks, a Buck knife, a Buck knife case, a pair of blood-
    stained gloves, and a Daisy air pistol.
    Jennings (age twenty-six) and Jason Graves (age
    eighteen), both of whom had previously worked at
    the Cracker Barrel and knew the victims, were
    apprehended and jailed approximately three weeks
    later in Las Vegas, Nevada, where Jennings ultimately
    made lengthy statements to Florida law enforcement
    personnel. In a taped interview, Jennings blamed the
    murders on Graves, but admitted his (Jennings’)
    involvement in planning and, after several aborted
    attempts, actually perpetrating the robbery with
    Graves. Jennings acknowledged wearing gloves
    during the robbery and using his Buck knife in taping
    the victims’ hands, but claimed that, after doing so,
    he must have set the Buck knife down somewhere
    and did not remember seeing it again. Jennings
    further stated that he saw the dead bodies in the
    freezer and that his foot slipped in some blood, but
    that he did not remember falling, getting blood on his
    clothes or hands, or washing his hands in the kitchen
    sink. Jennings also stated that the Daisy air pistol
    belonged to Graves, and directed police to a canal
    where he and Graves had thrown other evidence of
    the crime.
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    21-11591              Opinion of the Court                        5
    In an untaped interview the next day, during which
    he was confronted with inconsistencies in his story
    and the evidence against him, Jennings stated, “I think
    I could have been the killer. In my mind I think I
    could have killed them, but in my heart I don’t think
    I could have.”
    At trial, the taped interview was played for the jury,
    and one of the officers testified regarding Jennings’
    untaped statements made the next day. The items
    ultimately recovered from the canal were also
    entered into evidence.
    The medical examiner, who performed autopsies on
    the victims, testified that they died from “sharp force
    injuries” to the neck caused by “a sharp-bladed
    instrument with a very strong blade,” like the Buck
    knife found at the crime scene. A forensic serologist
    testified that traces of blood were found on the Buck
    knife, the Buck knife case, the area around the sink,
    and one of the gloves recovered from the crime
    scene, but in an amount insufficient for further
    analysis.     An impressions expert testified that
    Jennings’ tennis shoes recovered from the canal
    matched the bloody shoe prints inside the restaurant
    as well as some of the shoe prints from the outside
    tracks leading away from the restaurant.
    ...
    The State also presented testimony concerning
    previous statements made by Jennings regarding his
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    6                          Opinion of the Court                      21-11591
    dislike of victim Siddle. Specifically, Bob Evans, one
    of the managers at Cracker Barrel, testified that
    Jennings perceived Siddle to be holding him back at
    work and that, just after Jennings quit, he said about
    Siddle, “I hate her. I even hate the sound of her
    voice.” Donna Howell, who also worked at Cracker
    Barrel, similarly testified that she was aware of
    Jennings’ animosity and dislike of Siddle, and that
    Jennings had once said about Siddle, “I can’t stand the
    bitch. I can’t stand the sound of her voice.”
    The jury found Jennings guilty as charged.
    Jennings v. State, 
    718 So. 2d 144
    , 145–47 (Fla. 1998) (footnotes
    omitted).
    B. The Penalty Phase
    Following the jury’s guilty verdict, Jennings’s penalty phase
    proceeded the very next day. The trial court instructed the jury
    that its sentencing determination was an advisory
    recommendation and that “[t]he final decision as to what
    punishment shall be imposed rests solely with the judge.” 3 The
    3 At the time of Jennings’s trial, the jury’s sentencing determination was
    advisory and required only a majority vote, but the trial court was required to
    place “great weight” upon the recommendation of the jury. See 
    Fla. Stat. § 921.141
    (2) (1996); Tedder v. State, 
    322 So. 2d 908
    , 910 (Fla. 1975) (holding
    that jury recommendation “should be given great weight”), abrogated by
    Hurst v. Florida, 
    577 U.S. 92
     (2016). A vote of six or more jurors was necessary
    for a recommendation of life imprisonment. State v. Steele, 
    921 So. 2d 538
    ,
    545 (Fla. 2005), abrogated by Hurst, 577 U.S. at 92; see also Reynolds v. State,
    
    251 So. 3d 811
    , 827 (Fla. 2018) (explaining that under Florida’s former capital
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    21-11591                  Opinion of the Court                               7
    trial court further instructed that under Florida law, it was
    “required to give great weight and deference” to the jury’s
    recommendation.
    Jennings called six witnesses during the penalty phase—
    Michael Lobdell, Angela Lobdell, Brian McBride, Rebecca Lloyd,
    Mary Hamler, and his mother Tawny Jennings. These witnesses
    all testified very positively to Jennings’s character, collectively
    stating that Jennings was a good friend to everyone, a good son,
    “happy-go-lucky,” “easy going,” “fun-loving,” wonderful with
    children, and not a troublemaker.
    On cross-examination, the State elicited testimony from
    Angela and Michael Lobdell that Jennings came to their home the
    day after the murder, and he was not acting any differently.
    Additionally, McBride testified that the day before the robbery,
    Jennings told McBride that he was working at a mall on a
    construction job and that he was getting paid the next day and
    sentencing scheme, a jury “had various options for recommendations,
    including life, 7–to–5 death, 8–to–4 death, 9–to–3 death, 10–to–2 death, 11–to–
    1 death, and unanimous death outcomes”).
    Florida has since amended its capital sentencing scheme and now
    requires that, in order for the jury to recommend a death sentence, the jury
    must unanimously find the existence of at least one aggravating factor and
    unanimously agree that the defendant should be sentenced to death. 
    Fla. Stat. § 921.141
    (2) (2021). However, the jury’s recommendation that the defendant
    be sentenced to death is still advisory, and the trial court may override the
    recommendation. 
    Id.
     § 921.141(3).
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    8                          Opinion of the Court                        21-11591
    would be heading to California.
    Hamler—who was in a relationship with Jennings for a
    couple of years—testified on cross-examination that one time
    when they were watching a news broadcast about a robbery,
    Jennings stated that he “wouldn’t be stupid enough to stick
    around” and that he “would go north.” She also stated that
    Jennings was very angry with Cracker Barrel because it had told
    him to cut off his ponytail if he wanted “to advance himself,” and
    his ponytail was part of his Indian heritage. She confirmed that
    Jennings cut his ponytail off and had a grudge against Cracker
    Barrel because he was not promoted. Jennings held victim
    Dorothy Siddle particularly responsible, and told Hamler “[o]ne
    day [Siddle] would get hers.” 4
    Lastly, Tawny Jennings, Jennings’s mother, testified to
    Jennings’s background and the close relationship she shared with
    her son. Specifically, she testified that Jennings’s father was a Sioux
    Indian, and she divorced him while she was pregnant with
    Jennings. Jennings never met his father. Jennings was her only
    4 Siddle was an associate manager at the Cracker Barrel restaurant. During
    the guilt phase of the trial, another associate manager testified that Jennings,
    who was a grill cook, wanted to cross-train to become a server, but
    management told him that he had some areas he needed to improve first,
    including his “basic appearance, clothes, . . . [his] big long ponytail, . . . and
    also his attitude.” It is unclear from the record whether Siddle was the
    associate manager tasked with relaying this information to Jennings, but as a
    scheduling manager, she would have been the person to schedule the desired
    cross-training.
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    21-11591                   Opinion of the Court                               9
    living child. 5 She and Jennings moved a lot. They lived in Oregon
    for the first nine years of Jennings’s life, then they moved to
    Colorado (for about a year and a half), moved back to Oregon (for
    six months), then moved to Wyoming (for a year), then moved
    back to Oregon (for a year), then Arizona, and finally Florida when
    Jennings was about 14 or 15 years’ old. Tawny was a single mom
    all of Jennings’s childhood, and she occasionally had “a male
    companion” that lived with them. According to Tawny, Jennings
    was a straight-A student in school, but he had to quit high school
    at 17 because Tawny became very ill, and he needed to care for her.
    Tawny explained that she and Jennings were “very close” like “best
    friends,” and that she could not have asked for a better son.
    In closing, the State argued that it had established three
    statutory aggravating factors:6 (1) that the murders were
    5 Tawny had twins that died of crib death before Jennings was born.
    6 At the time of Jennings’s trial, Florida law defined aggravating circumstances
    as the following:
    (a) The capital felony was committed by a person under
    sentence of imprisonment or placed on community control.
    (b) The defendant was previously convicted of another capital
    felony or of a felony involving the use or threat of violence to
    the person.
    (c) The defendant knowingly created a great risk of death to
    many persons.
    (d) The capital felony was committed while the defendant was
    engaged, or was an accomplice, in the commission of, or an
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    10                          Opinion of the Court                      21-11591
    committed while Jennings engaged in or was an accomplice in the
    commission of the crime of robbery;7 (2) the murders were
    attempt to commit, or flight after committing or attempting
    to commit, any robbery . . . .
    (e) The capital felony was committed for the purpose of
    avoiding or preventing a lawful arrest or effecting an escape
    from custody.
    (f) The capital felony was committed for pecuniary gain.
    (g) The capital felony was committed to disrupt or hinder the
    lawful exercise of any governmental function or the
    enforcement of laws.
    (h) The capital felony was especially heinous, atrocious, or
    cruel.
    (i) The capital felony was a homicide and was committed in a
    cold, calculated, and premeditated manner without any
    pretense of moral or legal justification.
    (j) The victim of the capital felony was a law enforcement
    officer engaged in the performance of his official duties.
    (k) The victim of the capital felony was an elected or appointed
    public official engaged in the performance of his official duties
    if the motive for the capital felony was related, in whole or in
    part, to the victim’s official capacity.
    (l) The victim of the capital felony was a person less than 12
    years of age.
    
    Fla. Stat. § 921.141
    (5) (1996).
    7 In support of this aggravator, the State emphasized that the bloody shoe
    prints in the restaurant led from the freezer where the victims were to the
    office where the money was located.
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    21-11591                   Opinion of the Court                               11
    committed for the purpose of avoiding or preventing a lawful
    arrest; 8 and (3) the murders were committed in a cold, calculated,
    and premeditated manner. 9
    In response, Jennings’s counsel argued that the second and
    third aggravator did not apply. Jennings’s counsel also argued that
    the State’s contention that Jennings wanted to get revenge against
    Siddle because Jennings cut off his ponytail but then did not get the
    promotion was “a red herring” because Jennings and Graves did
    not know who the manager would be the morning of the robbery.
    8 In support of the second aggravator, the State emphasized that Jennings and
    Graves wore gloves so as to not leave identifying fingerprints. The State
    pointed out that they had masks with them in the truck, and Jennings admitted
    in a statement to law enforcement that the initial plan had been to wear masks
    and snatch the money. The State argued that they chose not to wear the
    masks because they knew there was no reason to wear masks if they were
    going to eliminate the witnesses. The State also pointed to the testimony from
    the guilt phase that Jennings stated that if he ever committed a robbery, he
    would not leave any witnesses.
    9 In support of this third aggravator, the State argued that Jennings carried the
    knife and killed the victims in a very personal way, one by one. The State also
    emphasized that there was evidence of calculated premeditation, including
    that Jennings attempted to set up an alibi; he and Graves brought tape with
    them to bind the victims; they wore gloves; they hid the truck; they registered
    in a hotel both before and after the crime using their own names (which
    demonstrated that they were not concerned with being linked to the crime
    because they knew they were not leaving any witnesses); and the day after
    Jennings went to a friend’s house and was not acting any different.
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    12                        Opinion of the Court                     21-11591
    Finally, counsel argued that there were several mitigating
    factors in Jennings’s life—“[h]is mother moved him about the
    country when he was young, quite a bit”; “[h]e never received a
    proper education”; “[h]e never knew his father” and “never had a
    continuous father image in his home”; he was an only child
    without any siblings to lean on; “[h]e had a succession of boyfriends
    of his mother’s who lived in the home from time to time”; he loved
    his mother and quit school to help her when she got sick; Jennings
    worked and contributed positively to society; and he had friends
    and people liked him. Counsel also reminded the jury that Graves
    would receive a life sentence for the same offenses and begged the
    jury to “show mercy” on Jennings.
    The jury deliberated approximately an hour and a half and
    returned a 10 to 2 recommendation in favor of the death penalty
    for each of the three murder counts.
    At the separate sentencing hearing, the trial court addressed
    the aggravating and mitigating circumstances. First, the trial court
    found the existence of the three aggravating factors proffered by
    the State. Second, the trial court found one statutory mitigating
    factor—Jennings had no significant prior criminal history, which it
    gave some weight.10 Third, the trial court found the following
    10 Florida law provided for the following statutory mitigating circumstances:
    (a) The defendant has no significant history of prior criminal
    activity.
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    21-11591                  Opinion of the Court                             13
    non-statutory mitigating circumstances: (1) Jennings had a
    “deprived childhood”—he never knew his father, his father
    abandoned his mother, his mother moved around frequently
    during his childhood years and had several boyfriends (given some
    weight); (2) Jennings’s codefendant received life imprisonment for
    the same crimes based on the same evidence (given some weight);
    (3) Jennings cooperated with law enforcement and made a
    voluntary statement that led officers to various items of evidence
    (b) The capital felony was committed while the defendant was
    under the influence of extreme mental or emotional
    disturbance.
    (c) The victim was a participant in the defendant’s conduct or
    consented to the act.
    (d) The defendant was an accomplice in the capital felony
    committed by another person and his participation was
    relatively minor.
    (e) The defendant acted under extreme duress or under the
    substantial domination of another person.
    (f) The capacity of the defendant to appreciate the criminality
    of his conduct or to conform his conduct to the requirements
    of law was substantially impaired.
    (g) The age of the defendant at the time of the crime.
    
    Fla. Stat. § 921.141
    (6) (1996). Jennings argued for three statutory mitigating
    circumstances: (1) he had “no significant history of prior criminal activity”;
    (2) he was an accomplice in the offense and his participation was relatively
    minor; and (3) Jennings acted under “extreme duress or under the substantial
    domination of another person.” See 
    Fla. Stat. § 921.141
    (6)(a), (b), and (e)
    (1996). The trial court found that the second and third statutory mitigators
    Jennings argued for did not exist.
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    14                         Opinion of the Court                       21-11591
    (given substantial weight); (4) Jennings had a regular, steady
    employment history (given little weight); (5) Jennings had a close,
    loving relationship with his mother (given little weight);
    (6) Jennings had “[p]ositive personality traits enabling the
    formation of strong, caring relationships with peers” (given some
    weight); (7) Jennings had a “[c]apacity to care for and be mutually
    loved by children” (given some weight); and (8) Jennings exhibited
    “exemplary courtroom behavior” during the proceedings (given
    little weight).
    The trial court found that “the aggravating
    circumstances . . . substantially outweigh[ed] the mitigating
    circumstances present” and that death was the appropriate
    sentence. Accordingly, the trial court imposed a sentence of death
    for each of the three murder counts and 15 years’ imprisonment
    for the robbery count.
    On direct appeal, the Florida Supreme Court affirmed
    Jennings’s convictions and sentences, and the United States
    Supreme Court denied certiorari. Jennings, 
    718 So. 2d at 144
    , cert.
    denied, 
    527 U.S. 1042
     (1999). 11
    11 The Florida Supreme Court rejected Jennings’s argument that the evidence
    was insufficient to support the avoid arrest aggravator and the cold, calculated,
    and premeditated aggravator. Jennings, 
    718 So. 2d at
    150–53.
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    21-11591                   Opinion of the Court                              15
    C. State Postconviction Proceedings
    Thereafter, Jennings, through counsel, filed a state
    postconviction motion to vacate his judgment of conviction and
    sentence, under Florida Rule of Criminal Procedure 3.850 and
    3.851, followed by several amended motions. In relevant part, he
    argued in two related claims that his counsel rendered
    constitutionally ineffective assistance when he failed to adequately
    investigate, prepare, and present mitigation at the penalty phase,
    including failing to adequately investigate his background and
    childhood, which he alleged contained a wealth of mitigation
    evidence, and failed to provide background information to the
    mental health experts that evaluated him prior to trial. The state
    postconviction court ordered an evidentiary hearing on his claims,
    at which Jennings presented several witnesses.
    i.   Evidentiary Hearing Testimony
    As relevant to this appeal, Jennings’s trial counsel, Thomas
    Osteen, who had extensive capital case experience at the time he
    represented Jennings,12 testified that an investigator, a court-
    appointed psychiatrist, Dr. Robert Wald, and a court-appointed
    12 Osteen testified that he retired in 2000, but he had been an assistant public
    defender for 30 years, and he had represented approximately 30 capital
    defendants prior to representing Jennings in 1996. Osteen also testified that
    co-counsel Adam Sapenoff did not play any role in the penalty phase other
    than being present.
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    16                         Opinion of the Court                       21-11591
    psychologist, Dr. Russell Masterson, assisted him with preparation
    for Jennings’s trial and the penalty phase. 13
    Dr. Masterson conducted various tests on Jennings and the
    results were all within normal limits. Dr. Masterson opined that
    Jennings had superior intelligence, and his testing results revealed
    no evidence of “psychotic process,” but “suggest[ed] the
    personality disorder, characterological disorder, sociopathic type
    of personality.”
    With regard to Jennings’s background, Dr. Masterson noted
    the following in his report: (1) Jennings and his mother moved
    around Colorado, Wyoming, Oregon, and Arizona during his
    childhood; (2) his mother had multiple relationships; (3) Jennings
    never met his father; (4) Jennings reported being a straight-A
    student, with no behavior problems; (5) Jennings “always had lots
    of friends” and described his childhood as “pretty normal” and “a
    13 Osteen utilized the Public Defender’s Office’s Investigator, Ed Neary, who
    was a retired police investigator and assisted Osteen in “just about all of [his]
    capital cases.” Although Neary did not have any formal mental health training
    or expertise, Osteen believed that Neary had “a good feel” for those types of
    issues. Osteen also testified that he worked regularly with both Dr. Wald and
    Dr. Masterson in other cases, and that they “knew what [he] was looking for.”
    Osteen did not seek assistance from a mitigation expert, which he
    explained were “not prevalent” at the time of the trial. Instead, he relied on
    what he learned from Dr. Wald and Dr. Masterson. Osteen did not attempt
    to obtain school records, employment records, or medical records, and he did
    not attempt to interview any of Jennings’s relatives other than Jennings’s
    mother.
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    21-11591                Opinion of the Court                         17
    pretty good first 15 years”; (6) Jennings became sexually active at
    age 12 when he was seduced by an older woman he babysat for,
    but he indicated his “first sexual experiences” were at age 5 or 6
    with a female cousin who was age 10; (7) Jennings denied any
    history of sexual abuse from adults; (8) at age 15, Jennings and his
    mother moved to Florida and his life “did a 180”—Jennings did not
    like the Florida school, he was bored, and he felt rejected by his
    peers, and he got into drugs, alcohol, and street racing; (9) as a teen,
    Jennings got into a fight with his mother’s boyfriend and
    hospitalized him—the boyfriend had been drunk and attacked
    Jennings’s mother; (10) Jennings dropped out of school his junior
    year of high school; (11) after dropping out, he “got into bar fights
    and was into acid, pot, and alcohol”; (12) he had regular
    employment in various occupations; (13) in 1989 or 1990, when a
    man threatened a woman Jennings was dating, Jennings kidnapped
    the man, had a firearm with him, and planned to kill the man, but
    he was arrested and pleaded no contest to attempted armed
    robbery (he was sentenced to a year in county jail and five years’
    probation); (14) while in jail, he was in “30 or 40 fights” but never
    got in trouble; (15) in 1992, “his life kind of fell apart” and he got
    heavy into drugs and alcohol and moved back in with his mother;
    (16) in 1994, he moved in with Mary Hamler—he loved her three
    kids a lot, but “really didn’t care about her”; and (17) after he and
    Hamler broke up, Jennings moved in with codefendant Graves.
    Dr. Wald’s report indicated that Jennings self-reported
    similar information concerning his childhood, educational
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    18                         Opinion of the Court                        21-11591
    history, 14 and background. 15 Jennings also reported that he saw a
    psychiatrist when he was eight years’ old due to his “bad temper,”
    including one instance where he choked his cousin for laughing at
    him. Dr. Wald agreed with Dr. Masterson’s assessment that
    Jennings’s testing was all relatively normal and opined that
    Jennings was very intelligent, with no mental disorders or brain
    dysfunction, and that Jennings had a “sociopathic personality.”16
    After reviewing their reports, Osteen elected not to call Dr.
    Wald or Dr. Masterson during the penalty phase. 17
    14 Dr. Wald reviewed Jennings’s school records from Florida, noting that they
    were “essentially non-contributory” to his report and indicated that Jennings
    struggled with several courses.
    15 Dr. Wald also noted that Jennings suffered a concussion at age 2 or 3 after
    he was hit on the head by a wooden board, which resulted in his
    hospitalization, and that Jennings had a lengthy history of drug and alcohol
    abuse that began in his teens. Jennings had a “number of prior arrests,”
    primarily for traffic violations, but including a shoplifting arrest in his teens
    and his arrest on attempted armed robbery. Jennings also self-reported that
    he “ha[d] stolen things for both money and . . . the ‘adrenalin[e] rush.’”
    Jennings indicated that “he [sought] gratification, [did] not feel at all
    remorseful about crimes he ha[d] committed, and ha[d] experienced no guilt
    relative to legal infractions.”
    16 Dr. Wald attempted to interview Jennings’s mother, who was very resistant
    at first, and then she did not show up for the scheduled interview.
    17 Osteen explained that it was part of his trial strategy not to call Dr. Wald or
    Dr. Masterson as witnesses because, after speaking with them, he “came to
    the conclusion that [their testimony] would not be helpful to a great extent,
    and so [he] decided to rely on [Jennings’s] mother and his friends to come
    USCA11 Case: 21-11591        Document: 30-1        Date Filed: 12/13/2022        Page: 19 of 38
    21-11591                  Opinion of the Court                              19
    In addition to Osteen’s testimony, at the state
    postconviction evidentiary hearing, Jennings presented testimony
    from three experts in support of his claims—Dr. Thomas Hyde, a
    behavioral neurologist, Dr. Hyman Eisenstein, a clinical
    psychologist and expert in neuropsychology, and Dr. Faye Sultan,
    a clinical psychologist. Dr. Hyde and Dr. Eisenstein both testified
    that Jennings suffered a number of closed head injuries 18 and had
    a history of febrile convulsions (seizures) between the ages of 8
    months and 2 years. Dr. Hyde opined that the seizures were a
    typical indicator of abnormal brain function; and that a history of
    head trauma may predispose a person to “some long-lasting
    neurological effects from brain damage.” Nevertheless, Dr. Hyde
    forward and make as many good statements as they could about the
    defendant.” He also did not want to call the doctors as witnesses because there
    was information in their reports—such as Jennings’s criminal history—that he
    did not want the jury to know about, particularly because he was arguing for,
    and received, the no significant criminal history statutory mitigator.
    18 Specifically, Jennings reported to Dr. Hyde and Dr. Eisenstein that he was
    hit in the head with a 2x4 piece of wood as a toddler; kicked in the head by a
    pony at age 4 or 5; punched in the face as a teen; ran into a brick wall at age
    16; engaged in a head-butting competition as a teen; was involved in multiple
    fights and suffered blows to the head; and was involved in a motorcycle
    accident (Jennings denied any head injury from motorcycle accident, but Dr.
    Eisenstein opined that “it was impossible that he didn’t have a closed head
    injury” from it).
    USCA11 Case: 21-11591        Document: 30-1        Date Filed: 12/13/2022        Page: 20 of 38
    20                        Opinion of the Court                      21-11591
    opined that Jennings’s neurological examination was normal “for
    the most part.” 19
    Following testing, Dr. Eisenstein opined that Jennings was
    “gifted” with learning disabilities that went untreated. 20 Dr.
    Eisenstein also diagnosed Jennings with intermittent explosive
    disorder, which is characterized by explosive aggressive responses
    that are not proportionate to the provocation. Dr. Eisenstein
    opined that the following statutory mitigating circumstances
    applied to Jennings—(1) his capacity to appreciate the criminality
    of his conduct or to conform his conduct to the law was impaired,
    and (2) he was under the influence of an extreme mental or
    emotional disturbance when he committed the murders.
    Dr. Faye Sultan testified that her investigation revealed that
    Jennings’s maternal grandfather was “overtly sexual” with his
    daughters, and that Tawny (Jennings’s mother) was molested by
    19 Dr. Hyde noted three “subtle neurological findings”—(1) Jennings’s pupils
    were asymmetrical (one was larger than the other); (2) he had a “postural
    tremor” in one hand; and (3) he had one unspecified “frontal release sign,” but
    he admitted that these subtle findings can also be present “in normal
    individuals.”
    20 Dr. Eisenstein explained that some of Jennings’s scores were excellent,
    while others were “indicative of a brain dysregulation” and a learning
    disability. Dr. Eisenstein noted that although both Jennings and his mother
    indicated that Jennings was a straight-A student, his school records—although
    missing a number of years—revealed that was not true.
    USCA11 Case: 21-11591        Document: 30-1        Date Filed: 12/13/2022        Page: 21 of 38
    21-11591                  Opinion of the Court                              21
    her brother, George “Sonny” Jennings.21 Some of the people
    Sultan interviewed witnessed Jennings sit on Sonny’s lap as a child,
    and Jennings reported that Sonny paid him a quarter to sit on his
    lap. Walter Croom, who married one of Jennings’s cousins, was
    also a child molester, and he occasionally babysat Jennings.
    However, Dr. Sultan confirmed that Jennings denied any sexual
    abuse and there was no direct evidence indicating that any had
    occurred, although she speculated it could have given the
    environment that he grew up in. Dr. Sultan concluded that
    Jennings grew up in extreme poverty and neglect and in an
    environment that involved “the sexualization of children.” She
    testified that children who grow up in that type of environment
    “don’t develop normally neurologically” and are “quite impulsive,
    sometimes aggressive, over sexualized themselves, often substance
    abusers to the extreme.”
    Based on her interviews with Jennings’s mother, Dr. Sultan
    opined that Tawny was “quite mentally ill”—although she could
    not offer any formal diagnosis—and Tawny had an “abnormal
    attachment” to Jennings when he was a child. Dr. Sultan noted
    that Tawny “behaved very oddly” toward Jennings, citing the fact
    that Tawny breastfed him until he was five, and an unspecified
    21 Tawny told Jennings at a very young age that she was a victim of sexual
    abuse, and Dr. Sultan opined that such knowledge produces significant
    emotional distress in children and “it certainly contributed” to “Jennings’[s]
    state.” And Jennings stated that at one time, he believed his uncle Sonny might
    be his biological father.
    USCA11 Case: 21-11591       Document: 30-1       Date Filed: 12/13/2022        Page: 22 of 38
    22                       Opinion of the Court                    21-11591
    person Sultan interviewed purportedly witnessed Tawny engage in
    sex in the presence of Jennings. 22
    Dr. Sultan’s interpretation of Jennings’s testing results “was
    quite similar” to Dr. Masterson’s interpretation. Dr. Sultan
    explained that Jennings was of above average intelligence, likely to
    be a serious substance abuser, had difficulty controlling his anger,
    was easily frustrated, extroverted, had a rigid personality, and was
    able to have relationships with other persons, but they were not
    likely to be long-lasting ones. Dr. Sultan also opined that Jennings
    had intermittent explosive disorder. She further opined that
    Jennings did not suffer from any mental illness, and that “he did not
    meet the standards for [Florida’s] statutory mitigators.”
    Nevertheless, she thought Jennings was “quite a damaged person”
    who “operate[d] in the world . . . in a highly dysfunctional way.”
    Finally, Jennings presented mitigation testimony from
    family and friends. Jennings’s cousin, Patricia Scudder, testified
    that, between the ages of 6 and 12, Jennings and Tawny lived in a
    three-bedroom cabin-type home at the Buccaneer Apartments
    (also known as the Buccaneer Motel). Scudder stayed with
    Jennings and his mother for two-week periods on three different
    22 Dr. Eisenstein similarly opined that Tawny was not a good mother, lacked
    parenting skills, and was not an accurate historian of Jennings’s background
    because she had been a victim of physical, sexual, and emotional abuse.
    USCA11 Case: 21-11591        Document: 30-1        Date Filed: 12/13/2022        Page: 23 of 38
    21-11591                  Opinion of the Court                             23
    occasions. 23 She described the condition of their apartment during
    her first stay as “[v]ery, very messy” with clothes piled everywhere
    and there were “[d]irty [k]otexes” around the apartment. But on
    cross-examination, she clarified that the reason why she was
    staying with them was because Jennings’s mother had just had
    surgery, was immobile, and needed help. The second time Patricia
    stayed with them, Jennings’s mother was again having health issues
    and needed help. On this occasion, Jennings’s mother had a new
    puppy, and there were puppy papers and dog poop on the floor,
    and dirty dishes everywhere. Patricia stated that Tawny prepared
    quick simple meals like toast, gravy, or hamburgers, and allowed
    Jennings to eat a lot of junk food.
    According to Patricia, Jennings regularly slept in the same
    bed with his mother at 5 or 6 years’ old. On one occasion, Patricia
    observed three men stay the night in Tawny’s home while Jennings
    was home. The next morning after two of the men had left,
    Patricia walked into the apartment, and Tawny and her boyfriend
    were “cuddled up together” on the hide-a-bed in the living room,
    unclothed—although not engaged in any sexual act—and Jennings
    was lying on the floor watching tv. Nevertheless, despite her
    testimony concerning the squalor of Jennings’s living conditions
    and poor parenting skills of Tawny, Patricia described Jennings’s
    23 Other than the three two-week periods that Patricia stayed with them, she
    saw Jennings and his mother “[n]ot very often at all.” And she lost touch with
    them after they moved in 1990, and she did not know anything about the case
    until years after the trial.
    USCA11 Case: 21-11591      Document: 30-1      Date Filed: 12/13/2022     Page: 24 of 38
    24                      Opinion of the Court                 21-11591
    and his mother’s relationship as “very loving” and explained that
    she had never “seen a mother and a son as close” as they were.
    Patricia’s husband, Lloyd, testified that Sonny molested
    Patricia, and Croom molested his and Patricia’s son, and that Sonny
    and Croom had the opportunity to be around Jennings. Lloyd also
    testified that he smoked marijuana with Tawny regularly, and that
    she also took a lot of pain pills because of health issues. Lloyd
    thought Tawny was a bad mother—describing her as selfish,
    unemployed, and a poor housekeeper and cook. 24 Lloyd often
    took Jennings fishing, taught him how to box, and did other things
    with him, like a father figure. But Lloyd lost touch with Jennings
    after Tawny moved from Oregon.
    Next, Heather Johnson testified that she was “good friends”
    with Jennings for a couple of years when they were 17 or 18 years’
    old. She stated that Jennings often expressed unhappiness, conflict,
    and resentment with his mother. At the time of Jennings’s trial,
    Johnson no longer lived in Florida, but she was contacted via letter
    by Jennings’s defense team, asking if she could give any “good
    word” or character statement on behalf of Jennings and whether
    she knew of anyone else who would be willing to testify on his
    behalf. She wrote back stating that she was not sure that she could
    be of much help because she and Jennings had lost contact and had
    24 When asked how Tawny supported herself, Lloyd stated that she was on
    welfare and speculated that she made money “[p]robably hooking.”
    USCA11 Case: 21-11591        Document: 30-1        Date Filed: 12/13/2022        Page: 25 of 38
    21-11591                  Opinion of the Court                              25
    not spoken in years. 25 She did not hear back from Jennings’s
    counsel, but she would have been willing to testify.
    Lastly, Kevin McBride testified that he was friends with
    Jennings when they were teenagers in Florida, and, at one point,
    Jennings lived with him for a few months when Jennings’s mother
    “was in between places.” He described Jennings’s mother as a
    “very nice lady” who was “always friendly” but unstable
    financially. He recalled that Jennings and his mother were more
    like friends than mother and son. He stated that Jennings drank
    and used marijuana on a daily basis, and he and Jennings used acid
    and mushrooms on occasion.26 McBride confirmed that he met
    with one of Jennings’s investigators at the time of Jennings’s trial,
    but that he was not asked to testify.
    25 Specifically, Johnson advised in her response that “[a]ll [she could] offer
    [was] a brief summary of the Brandy Bain Jennings that [she] knew and loved,
    and even that may not be a sterling character reference.” She went on to
    describe that Jennings was her best friend, confidant, and protector—a big
    brother type, who taught her things and made her feel safe. But he was also
    “often foolish” and would do impulsive things without considering the
    consequences. She stated that she believed he could have committed the
    robbery because it was a way to act out the anger and frustration that he had
    a difficult time expressing, but she did not believe him capable of murder. She
    also advised that she could not think of anyone else who would be willing to
    help Jennings.
    26 Bruce Martin, half-brother to Kevin McBride, similarly testified at the
    evidentiary hearing that Jennings drank heavily, used marijuana every day,
    and used acid about once a week.
    USCA11 Case: 21-11591     Document: 30-1     Date Filed: 12/13/2022    Page: 26 of 38
    26                     Opinion of the Court               21-11591
    ii.   Trial Court Denies Jennings’s Postconviction Motion
    Following the evidentiary hearing, the trial court denied
    Jennings’s postconviction motion on the merits. Florida v.
    Jennings, No. 1995-CF-02284, 
    2011 WL 11573988
     (Fla. Cir. Ct. Jan.
    31, 2011). The trial court concluded that counsel’s mitigation
    investigation was not deficient because the record demonstrated
    that counsel interviewed Jennings’s mother and various friends and
    called witnesses during the penalty phase that he thought could
    present positive information, which was “proper trial strategy.” 
    Id.
    at *4–6. Finally, the trial court concluded that Jennings could not
    show prejudice because, even if counsel had introduced all of the
    information in question, there was no reasonable probability of a
    different outcome. 
    Id. at *6
    . Jennings appealed to the Florida
    Supreme Court.
    iii.   Florida Supreme Court’s Decision
    The Florida Supreme Court determined that counsel made
    a reasonable strategic decision to not present mitigation testimony
    from Dr. Wald and Dr. Masterson during the penalty phase
    “because it could open the door to other damaging testimony.”
    Jennings v. State, 
    123 So. 3d 1101
    , 1114 (Fla. 2013) (Jennings II)
    (quotation omitted). The court concluded that counsel was not
    “deficient for choosing to pursue other mitigation evidence that he
    determined was more likely to help Jennings at trial.” 
    Id.
     Finally,
    the court held that Jennings failed to establish prejudice because
    the trial court found as a nonstatutory mitigation that Jennings had
    a deprived childhood, and the omitted information concerning
    USCA11 Case: 21-11591       Document: 30-1        Date Filed: 12/13/2022        Page: 27 of 38
    21-11591                  Opinion of the Court                            27
    Jennings’s troubled childhood and emotional development did
    “not rise to the level of unpresented mitigation previously held to
    be prejudicial.” 
    Id.
     at 1117–18.
    D. Federal § 2254 Habeas Proceeding
    Following the denial of state postconviction relief, Jennings
    filed a § 2254 federal habeas petition in the United States District
    Court for the Middle District of Florida, raising several claims. As
    relevant to this appeal, he combined his arguments that counsel
    was ineffective for failing to conduct an adequate investigation into
    mental health mitigation and his childhood background into a
    single claim. Specifically, he argued that counsel was ineffective at
    the penalty phase because (1) counsel’s mitigation investigation
    was minimal and he failed to obtain medical or school records and
    failed to provide such records to the experts; and (2) counsel made
    no effort to truly investigate Jennings’s background and childhood,
    which would have revealed a wealth of compelling mitigation. 27
    The district court denied the petition, concluding that the
    state court’s determination that counsel was not deficient was not
    contrary to, or an unreasonable application of, Strickland v.
    27 Jennings also took issue with the adequacy, sufficiency, and competency of
    Dr. Wald’s and Dr. Masterson’s reports and Osteen’s reliance on those
    allegedly deficient reports, but as his counsel acknowledged during oral
    argument, that issue is beyond the scope of the COA in this case. See Murray
    v. United States, 
    145 F.3d 1249
    , 1251 (11th Cir. 1998) (holding that “in an
    appeal brought by an unsuccessful habeas petitioner, appellate review is
    limited to the issues specified in the COA”).
    USCA11 Case: 21-11591     Document: 30-1     Date Filed: 12/13/2022    Page: 28 of 38
    28                     Opinion of the Court               21-11591
    Washington, 
    466 U.S. 668
     (1984). Jennings v. Sec’y, Dep’t of Corr.,
    No. 2:13-cv-751-FtM-38MRM, 
    2020 WL 7047706
    , *9–11 (M.D. Fla.
    Dec. 1, 2020). Because the district court found that the
    performance prong was not satisfied, it did not address the
    prejudice prong. 
    Id.
     The district court denied Jennings a COA, and
    he sought a COA from this Court. 
    Id. at *21
    . As noted previously,
    we granted Jennings a COA on one issue: “Whether the district
    court erred in denying Jennings’s claim that his trial counsel
    rendered ineffective assistance in the penalty phase of his capital
    trial by failing to conduct further investigation into Jennings’s
    childhood and background.”
    II.    Standard of Review
    We review the district court’s denial of a § 2254 habeas
    petition de novo. Ward v. Hall, 
    592 F.3d 1144
    , 1155 (11th Cir.
    2010).
    The Antiterrorism and Effective Death Penalty Act of 1996
    (“AEDPA”) establishes a “highly deferential standard for evaluating
    state-court rulings, [and] demands that state-court decisions be
    given the benefit of the doubt.” Cullen v. Pinholster, 
    563 U.S. 170
    ,
    181 (2011) (quoting Woodford v. Visciotti, 
    537 U.S. 19
    , 24 (2002)
    (per curiam)). Thus, under AEDPA, a federal court’s review of a
    final state habeas decision is greatly circumscribed, and a federal
    habeas court cannot grant a state petitioner habeas relief on any
    USCA11 Case: 21-11591     Document: 30-1      Date Filed: 12/13/2022     Page: 29 of 38
    21-11591               Opinion of the Court                        29
    claim that was adjudicated on the merits in state court unless the
    state court’s adjudication of the claim:
    (1)    resulted in a decision that was contrary to, or
    involved an unreasonable application of, clearly
    established Federal law, as determined by the
    Supreme Court of the United States; or
    (2)   resulted in a decision that was based on an
    unreasonable determination of the facts in light of the
    evidence presented in the State court proceeding.
    
    28 U.S.C. § 2254
    (d)(1)–(2).
    “[C]learly established Federal law” means “the holdings, as
    opposed to the dicta, of [the Supreme] Court’s decisions as of the
    time of the relevant state-court decision.” Williams v. Taylor, 
    529 U.S. 362
    , 412 (2000). “[T]o be ‘contrary to’ clearly established
    federal law, the state court must either (1) apply a rule that
    contradicts the governing law set forth by Supreme Court case law,
    or (2) reach a different result from the Supreme Court when faced
    with materially indistinguishable facts.” Ward, 
    592 F.3d at 1155
    (quotations omitted); see also Bell v. Cone, 
    535 U.S. 685
    , 694 (2002).
    An “unreasonable application” of federal law occurs “if the
    state court correctly identifies the governing legal principle from
    [the Supreme Court’s] decisions but unreasonably applies it to the
    facts of the particular case.” Bell, 
    535 U.S. at 694
    . “[A]n
    unreasonable application of federal law is different from an
    incorrect application of federal law.” Williams, 
    529 U.S. at 410
    (emphasis omitted). “Indeed, ‘a federal habeas court may not issue
    USCA11 Case: 21-11591     Document: 30-1      Date Filed: 12/13/2022    Page: 30 of 38
    30                     Opinion of the Court                21-11591
    the writ simply because that court concludes in its independent
    judgment that the relevant state-court decision applied clearly
    established federal law erroneously or incorrectly.’” Renico v. Lett,
    
    559 U.S. 766
    , 773 (2010) (quoting Williams, 
    529 U.S. at 411
    ); see
    also Shinn v. Kayer, 
    141 S. Ct. 517
    , 523 (2020) (“To meet [the
    unreasonable application] standard, a prisoner must show far more
    than that the state court’s decision was merely wrong or even clear
    error.” (quotation omitted)). Rather, the state court’s application
    of federal law “must be ‘objectively unreasonable,’” Renico, 
    559 U.S. at 773
    , meaning that “the state court’s decision is so obviously
    wrong that its error lies beyond any possibility for fairminded
    disagreement, Shinn, 141 S. Ct. at 523 (quotations omitted). “This
    distinction creates a substantially higher threshold for obtaining
    relief than de novo review.” Renico, 
    559 U.S. at 773
     (quotation
    omitted).
    “[W]hen the last state court to decide a prisoner’s federal
    claim explains its decision on the merits in a reasoned opinion . . .
    a federal habeas court simply reviews the specific reasons given by
    the state court and defers to those reasons if they are reasonable.”
    Wilson v. Sellers, 
    138 S. Ct. 1188
    , 1192 (2018). However, we are
    not limited by the particular justifications the state court provided
    for its reasons, and we may consider additional rationales that
    support the state court’s determination. Pye v. Warden, Ga. Diag.
    Prison, 
    50 F.4th 1025
    , 1036 (11th Cir. 2022) (en banc). A state
    court’s decision is reasonable “so long as ‘fairminded jurists could
    disagree’ on the correctness of the state court’s decision.”
    USCA11 Case: 21-11591     Document: 30-1     Date Filed: 12/13/2022    Page: 31 of 38
    21-11591               Opinion of the Court                      31
    Harrington v. Richter, 
    562 U.S. 86
    , 101 (2011) (quoting Yarborough
    v. Alvarado, 
    541 U.S. 652
    , 664 (2004)).
    In addition, “a determination of a factual issue made by a
    State court shall be presumed to be correct,” and the petitioner
    bears “the burden of rebutting the presumption of correctness by
    clear and convincing evidence.” 
    28 U.S.C. § 2254
    (e)(1). With these
    principles in mind, we turn to the merits of Jennings’s appeal.
    III.   Discussion
    Jennings argues that Osteen was constitutionally ineffective
    by failing to adequately investigate and present mitigation
    evidence related to his childhood and background, and in failing to
    obtain and provide relevant background records to Dr. Wald and
    Dr. Masterson.
    To succeed on a claim of ineffective assistance of counsel in
    violation of the Sixth Amendment, a petitioner must establish two
    elements. Strickland, 
    466 U.S. at 687
    . “First, the defendant must
    show that counsel’s performance was deficient.” 
    Id.
     Review of
    counsel’s actions is “highly deferential” and “a court must indulge
    a strong presumption that counsel’s conduct falls within the wide
    range of reasonable professional assistance.” 
    Id. at 689
    .
    “Second, the defendant must show that the deficient
    performance prejudiced the defense.” 
    Id. at 687
    . Prejudice occurs
    when there is a reasonable probability that, “but for counsel’s
    unprofessional errors, the result of the proceeding would have
    been different.” 
    Id. at 694
    . “When a defendant challenges a death
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    32                         Opinion of the Court                       21-11591
    sentence . . . the question is whether there is a reasonable
    probability that, absent the errors, the sentencer—including an
    appellate court, to the extent it independently reweighs evidence—
    would have concluded that the balance of aggravating and
    mitigating circumstances did not warrant death.” 28 
    Id. at 695
    .
    “The likelihood of a different result must be substantial, not just
    conceivable.” Harrington, 
    562 U.S. at 112
    . In determining whether
    there is a reasonable probability of a different result, a court must
    “consider ‘the totality of the available mitigation evidence—both
    that adduced at trial, and the evidence adduced in the habeas
    proceeding’—and ‘reweig[h] it against the evidence in
    aggravation.’” Porter v. McCollum, 
    558 U.S. 30
    , 41 (2009) (quoting
    Williams, 
    529 U.S. at
    397–98).
    Because both prongs of the Strickland standard “must be
    satisfied to show a Sixth Amendment violation, a court need not
    address the performance prong if the petitioner cannot meet the
    prejudice prong, and vice-versa.” Ward, 
    592 F.3d at 1163
    .
    Furthermore, the Strickland standard is a general standard, which
    means that “a state court has even more latitude to reasonably
    determine that a defendant has not satisfied that standard.”
    Knowles v. Mirzayance, 
    556 U.S. 111
    , 123 (2009); see also Renico,
    28 Again, at the time of Jennings’s trial, only a majority 7-5 vote was necessary
    to recommend death. Reynolds, 251 So. 3d at 827 (explaining that under
    Florida’s old capital sentencing scheme, a jury “had various options for
    recommendations, including life, 7–to–5 death, 8–to–4 death, 9–to–3 death,
    10–to–2 death, 11–to–1 death, and unanimous death outcomes”).
    USCA11 Case: 21-11591       Document: 30-1        Date Filed: 12/13/2022       Page: 33 of 38
    21-11591                 Opinion of the Court                            33
    
    559 U.S. at 776
     (“Because AEDPA authorizes federal courts to grant
    relief only when state courts act unreasonably, it follows that ‘[t]he
    more general the rule’ at issue—and thus the greater the potential
    for reasoned disagreement among fair-minded judges—‘the more
    leeway [state] courts have in reaching outcomes in case-by-case
    determinations.’” (quoting Yarborough, 
    541 U.S. at 664
    )).
    Here, we need not address Jennings’s arguments related to
    the performance prong because the Florida Supreme Court’s
    determination that Jennings failed to establish prejudice was not
    contrary to, or an unreasonable application of, Strickland or based
    on an unreasonable determination of the facts. The mitigation
    evidence offered in Jennings’s postconviction proceedings
    primarily related to non-statutory mitigation. Specifically, in
    addition to Jennings’s positive character traits and relationships
    that the jury and judge originally heard during the penalty phase,
    had the evidence submitted at the postconviction proceeding been
    presented at the penalty phase, the jury and the sentencing judge
    would also have learned of Jennings’s chaotic childhood; his
    mother’s poor parenting skills; his family’s history of sexual
    abuse; 29 Jennings’s drug and alcohol abuse; his history of head
    29 Jennings argues that the Florida Supreme Court unreasonably discounted
    the evidence of sexual abuse in his family and the effect that such an
    environment would have had on Jennings’s emotional and mental
    development in contravention of the Supreme Court’s decision in Porter.
    Contrary to Jennings’s argument, the Florida Supreme Court did not discount
    the evidence of sexual abuse to “irrelevance” but instead determined that it
    was of minimal value because evidence of sexual abuse of Jennings’s family
    USCA11 Case: 21-11591        Document: 30-1        Date Filed: 12/13/2022        Page: 34 of 38
    34                        Opinion of the Court                     21-11591
    injuries and febrile seizures; that his neurological testing was
    normal despite repeated head injuries; that he did not have any
    mental illness; that he had intermittent explosive disorder and that
    two experts believed he had sociopathic personality traits; that
    Jennings had above-average intelligence; and that he had a history
    of criminal acts, some of which were violent.
    Given the facts of this case, it was not unreasonable for the
    state court to conclude that Jennings was not prejudiced by
    counsel’s failure to present the mitigation evidence in question
    during the penalty phase. As an initial matter, there is a significant
    probability that much of the omitted mitigation evidence when
    combined with that adduced at trial, would have undermined
    some of the mitigating factors that the trial court found—namely,
    that (1) Jennings had no significant prior criminal history
    (Jennings’s only statutory mitigating factor), (2) he had a close,
    loving relationship with his mother, and (3) he had “positive
    personality traits enabling the formation of strong, caring
    relationships with peers.” And we have held that it is not an
    members “might have been mitigating in establishing [his] troubled childhood
    and emotional development,” but the trial court already found as a non-
    statutory mitigating factor that he had a deprived childhood. Jennings II, 
    123 So. 3d at 1118
    . It was not contrary to, or an unreasonable application of,
    clearly established federal law for the Florida Supreme Court to determine
    that the evidence of familial sexual abuse was of minimal value given that
    Jennings expressly denied any personal history of sexual abuse, and there was
    no other evidence indicating that Jennings himself suffered any sexual abuse
    from any family members.
    USCA11 Case: 21-11591     Document: 30-1     Date Filed: 12/13/2022    Page: 35 of 38
    21-11591               Opinion of the Court                      35
    unreasonable application of Strickland to conclude that there is no
    prejudice when much of the mitigation evidence would have
    constituted a double-edged sword. See Gavin v. Comm’r, Ala.
    Dep’t of Corr., 
    40 F.4th 1247
    , 1269 (11th Cir. 2022) (holding that
    mitigation evidence “could have been a double-edged sword,” and,
    therefore, the state court reasonably applied Strickland when it
    concluded that petitioner could not establish prejudice); Ponticelli
    v. Sec’y, Fla. Dep’t of Corr., 
    690 F.3d 1271
    , 1296 (11th Cir. 2012)
    (“[B]oth the Supreme Court and this Court have consistently
    rejected [the] prejudice argument [ ] where mitigation evidence
    was a two-edged sword or would have opened the door to
    damaging evidence.” (second and third alterations in original)
    (quotations omitted)).
    Furthermore, there were significant aggravating factors
    present in this case—(1) the murders were committed while
    Jennings was engaged in or was an accomplice in the commission
    of a robbery; (2) the murders were committed for the purpose of
    avoiding or preventing a lawful arrest or to effectuate an escape
    from custody; and (3) the crimes were committed in a cold,
    calculated, premeditated manner. Notably, the cold, calculated,
    and premeditated factor is one of “the weightiest aggravating
    factors in Florida’s capital sentencing scheme.” Carr v. State, 
    156 So. 3d 1052
    , 1071 (Fla. 2015) (quotations omitted). And as the state
    postconviction court noted, the nature of, and circumstances
    surrounding, the three murders in this case were particularly
    heinous. “We’ve repeatedly held that even extensive mitigating
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    36                      Opinion of the Court                  21-11591
    evidence wouldn’t have been reasonably likely to change the
    outcome of sentencing in light of a particularly heinous crime and
    significant aggravating factors.” Pye, 50 F.4th at 1049 (collecting
    cases); see also Puiatti v. Sec’y, Fla. Dep’t of Corr., 
    732 F.3d 1255
    ,
    1287–88 (11th Cir. 2013) (holding that petitioner could not show
    prejudice based on mitigation evidence of depraved, impoverished,
    and abusive childhood where one of the aggravating factors was
    the cold, calculated, and premeditated aggravator). Thus, in light
    of the facts of this case, we cannot say that the Florida Supreme
    Court’s determination that Jennings did not suffer prejudice was so
    obviously wrong as to be beyond any possibility for fairminded
    disagreement, which is “the only question that matters” under
    § 2254(d). Shinn, 141 S. Ct. at 526; see also Jones v. Sec’y, Fla. Dep’t
    of Corr., 
    834 F.3d 1299
    , 1312–17 (11th Cir. 2016) (holding that state
    court’s determination that the petitioner failed to demonstrate
    prejudice was reasonable where the mitigating evidence was of
    limited value and there were significant aggravating factors).
    To the extent that Jennings argues that his case is analogous
    to Porter or Sears v. Upton, 
    561 U.S. 945
     (2010), and that those
    cases compel a finding of prejudice in this case, his argument is
    unpersuasive. The mitigating evidence in Porter was significantly
    more compelling than that presented in Jennings’s case. For
    instance, in Porter, the jury never heard that (1) he suffered from
    brain damage that could result in “impulsive, violent behavior”;
    (2) that he had “heroic military service in two of the most critical—
    and horrific—battles of the Korean War”; (3) he suffered from
    USCA11 Case: 21-11591      Document: 30-1      Date Filed: 12/13/2022     Page: 37 of 38
    21-11591                Opinion of the Court                        37
    mental health issues following the war; (4) he had an extensive
    history of childhood physical abuse by his father; and (5) that
    Porter was in special education classes and left school at the age of
    12 or 13. 
    558 U.S. at
    33–37, 41. More importantly, in Porter, the
    Supreme Court reasoned that, had the jury heard this extensive
    mitigation, there was a reasonable probability that the jury would
    have struck a different balance given that there appeared to be only
    one aggravating factor that tipped the scales in favor of a death
    sentence. 
    Id.
     at 41–42. In contrast, although Jennings’s mitigation
    evidence included details about a deprived and impoverished
    childhood and that he had a history of head trauma, there was no
    evidence of brain dysfunction, mental illness—indeed Jennings’s
    experts opined that he was very intelligent with no mental
    disorders or brain dysfunction—or physical or sexual abuse, and
    Jennings’s death sentence was supported by three significant
    aggravating factors. Given the significant differences between
    Porter and the case at hand, Porter cannot compel a finding of
    prejudice in this case.
    Similarly, the mitigation evidence in Sears was far stronger
    than that in Jennings’s case. The mitigation evidence in Sears
    included that (1) Sears “suffer[ed] from substantial cognitive
    impairment” and he was “among the most impaired individuals in
    the population in terms of ability to suppress competing impulses
    and conform behavior”; (2) he had a history of head trauma and
    “significant frontal lobe abnormalities”; (3) he grew up in a volatile,
    physically abusive home; and (4) he suffered sexual abuse from a
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    38                      Opinion of the Court                  21-11591
    family member. 
    561 U.S. at
    948–50. Furthermore—and this is a
    crucial difference—Sears was not subject to AEDPA’s deferential
    review standard because the Sears appeal was not from a federal
    petition for a writ of habeas corpus; instead, Sears had appealed
    from the state court’s decision directly to the United States
    Supreme Court. 
    Id. at 946
    . Moreover, Sears did not involve a
    finding of prejudice. Rather, the Supreme Court determined that
    the state court failed to apply the proper prejudice inquiry, and it
    remanded the case for the state court to conduct “[a] proper
    analysis of prejudice” in the first instance. 
    Id. at 956
     (“It is for the
    state court—and not for either this Court or even [the dissenting
    Justice]—to undertake [the prejudice inquiry] in the first
    instance.”). Thus, Sears cannot compel a finding of prejudice in
    Jennings’s case.
    Accordingly, we affirm the district court’s denial of
    Jennings’s habeas petition.
    AFFIRMED.