IN THE COURT OF APPEALS OF IOWA
No. 23-1504 Filed November 13, 2024
BROOKE CARTER, Plaintiff-Appellant,
vs.
MUNICIPAL FIRE AND POLICE RETIREMENT SYSTEM OF IOWA, Defendant-Appellee. ________________________________________________________________
Appeal from the Iowa District Court for Polk County, Coleman McAllister,
Judge.
A former police sergeant appeals a district court ruling on certiorari affirming
a board’s finding that she is not entitled to accidental disability benefits for a mental
injury. AFFIRMED.
Charles Gribble and Christopher Stewart of Gribble, Boles, Stewart &
Witosky Law, Des Moines, for appellant.
Cynthia Boyle Lande and Jennifer L. Lindberg of Brown, Winick, Graves,
Gross and Baskerville, P.L.C., Des Moines, for appellee.
Heard by Schumacher, P.J., Badding, J., and Vogel, S.J.*
*Senior judge assigned by order pursuant to Iowa Code section 602.9206
(2024). 2
BADDING, Judge.
Former police sergeant Brooke Carter sought accidental disability benefits
under Iowa Code chapter 411 (2022) for a mental injury she suffered after
watching a suspect’s vehicle intentionally ram into another officer’s squad car. The
Municipal Fire and Police Retirement System denied her claim for accidental
disability benefits and awarded her ordinary disability benefits instead. Carter
sought certiorari review from the district court, asserting the board of trustees for
the system acted illegally in denying her claim for accidental benefits because the
board applied the wrong legal causation standard, and its decision was not
supported by substantial evidence. The court denied Carter’s claims and annulled
the writ of certiorari.
Carter appeals, raising the same two claims as she did before the district
court—the first of which is an issue of first impression: whether the legal causation
standard recently set out in Tripp v. Scott Emergency Communications Center,
977 N.W.2d 459 (Iowa 2022) for workers’ compensation benefits based on mental
injuries applies to accidental disability benefits for police officers under
chapter 411. We conclude the court in Tripp did not overrule the occupation-
specific, greater-magnitude standard under chapter 411 from a pair of cases the
parties refer to as Cornish-Moon. See City of Cedar Rapids v. Mun. Fire & Police
Ret. Sys. (Cornish), 572 N.W.2d 919, 922 (Iowa 1998); Moon v. Mun. Fire & Police
Ret. Sys. (Moon), 548 N.W.2d 565, 568 (Iowa 1998). Using that standard, we
agree with the district court that the board’s decision denying Carter accidental
disability benefits was supported by substantial evidence. We accordingly affirm
the court’s judgment annulling Carter’s writ of certiorari. 3
I. Background Facts and Proceedings
Brooke Carter worked as a police officer for the City of Waterloo for more
than thirty years, starting in 1990 when she was just twenty years old. In 2001,
Carter was promoted to sergeant and became a shift supervisor on patrol. During
one of her shifts in December 2014, Carter and two other officers—Ben Bloker and
Randall Hammitt—were dispatched to a disorderly conduct call involving Kelvin
Plain Jr. Dispatch notified the officers that Plain was outside the reporting party’s
residence making threats and cautioned that he was “dangerous, carries
weapons.” Carter was familiar with Plain and knew he did “not like law
enforcement officers whatsoever,” had a “volatile temper,” and “usually had a
weapon with him.”
Bloker arrived on the scene first. A video from his squad car captured the
officers’ interaction with Plain, who was sitting in a vehicle parked in the driveway.
Bloker described Plain as “highly agitated and very upset.” After talking to Plain
and the reporting party, Bloker told Plain that he needed to leave. Plain was still
very upset, according to Bloker, but drove away. As Plain was leaving, Hammitt
pulled up in his squad car, with Carter not far behind. Bloker filled them in on what
happened, and Carter decided to turn her car around at the dead-end street,
intending to “stay there until [the] officers had cleared the scene.” Hammitt was
still in his car, facing her. Meanwhile, Plain called the reporting party, who was
standing outside with Bloker. She answered on speaker phone, and Plain can be
heard on the video, ranting at her.
With her car turned around and facing the street, Carter saw Plain’s vehicle
come speeding back towards them, accelerating the whole time. She didn’t have 4
time to do anything except honk her horn to warn the other two officers. Bloker
heard the horn and drew his weapon, but he could not stop Plain before he rammed
into the back of Hammitt’s squad car. The impact pushed Hammitt’s car into a
parked car and then into Carter’s squad car, before slamming into a tree.
Because of how fast Plain was going when he hit Hammitt’s car—at least
fifty-seven miles per hour—both Carter and Bloker thought Hammitt died in the
crash. They drew their weapons and cautiously approached Plain’s vehicle, “fully
expect[ing] him to start shooting us.” But they managed to get Plain on the ground
and arrest him. As Carter and Bloker were handcuffing Plain, Hammitt climbed out
the passenger side of his squad car and ran over to assist them. None of the
officers suffered serious physical injuries from the incident.
But the traumatic incident continued to affect Carter mentally, with feelings
of extreme guilt, shame, and failure. She tried to cover up those feelings by
drinking alcohol, explaining the “worse the feelings got, the more I drank.”
Although this continued for years, Carter kept working as a police officer until
August 2021, when she sought substance-use treatment.
Carter completed an inpatient treatment program, following which she
sought counseling. She was diagnosed with post-traumatic stress disorder,
substance use disorder, and anxiety, which her treatment providers linked to the
incident with Plain in December 2014. Carter did not return to the police
department after finishing treatment, instead applying for accidental disability
benefits in November 2021. The system’s executive director notified Carter in April
2022 that while she “qualified for an ordinary disability pension instead,” she was
not entitled to accidental disability benefits because the “evidence does not 5
establish [her] incapacity was caused by an incident which was unusually stressful
for police officer work.” Carter appealed that decision to a three-person disability
appeals committee from the system’s board of trustees. At the hearing on her
appeal, the City waived its right to present evidence or question Carter’s witnesses,
who included Carter, Bloker, Hammitt, and another officer.
Following the hearing, the committee denied Carter’s appeal for accidental
disability benefits but affirmed her award of ordinary disability benefits. The
committee first determined that Carter had to establish the legal causation
component of her claim under the Cornish-Moon standard, which provides that “an
accidental disability pension is payable under Iowa Code [chapter] 411 for a mental
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IN THE COURT OF APPEALS OF IOWA
No. 23-1504 Filed November 13, 2024
BROOKE CARTER, Plaintiff-Appellant,
vs.
MUNICIPAL FIRE AND POLICE RETIREMENT SYSTEM OF IOWA, Defendant-Appellee. ________________________________________________________________
Appeal from the Iowa District Court for Polk County, Coleman McAllister,
Judge.
A former police sergeant appeals a district court ruling on certiorari affirming
a board’s finding that she is not entitled to accidental disability benefits for a mental
injury. AFFIRMED.
Charles Gribble and Christopher Stewart of Gribble, Boles, Stewart &
Witosky Law, Des Moines, for appellant.
Cynthia Boyle Lande and Jennifer L. Lindberg of Brown, Winick, Graves,
Gross and Baskerville, P.L.C., Des Moines, for appellee.
Heard by Schumacher, P.J., Badding, J., and Vogel, S.J.*
*Senior judge assigned by order pursuant to Iowa Code section 602.9206
(2024). 2
BADDING, Judge.
Former police sergeant Brooke Carter sought accidental disability benefits
under Iowa Code chapter 411 (2022) for a mental injury she suffered after
watching a suspect’s vehicle intentionally ram into another officer’s squad car. The
Municipal Fire and Police Retirement System denied her claim for accidental
disability benefits and awarded her ordinary disability benefits instead. Carter
sought certiorari review from the district court, asserting the board of trustees for
the system acted illegally in denying her claim for accidental benefits because the
board applied the wrong legal causation standard, and its decision was not
supported by substantial evidence. The court denied Carter’s claims and annulled
the writ of certiorari.
Carter appeals, raising the same two claims as she did before the district
court—the first of which is an issue of first impression: whether the legal causation
standard recently set out in Tripp v. Scott Emergency Communications Center,
977 N.W.2d 459 (Iowa 2022) for workers’ compensation benefits based on mental
injuries applies to accidental disability benefits for police officers under
chapter 411. We conclude the court in Tripp did not overrule the occupation-
specific, greater-magnitude standard under chapter 411 from a pair of cases the
parties refer to as Cornish-Moon. See City of Cedar Rapids v. Mun. Fire & Police
Ret. Sys. (Cornish), 572 N.W.2d 919, 922 (Iowa 1998); Moon v. Mun. Fire & Police
Ret. Sys. (Moon), 548 N.W.2d 565, 568 (Iowa 1998). Using that standard, we
agree with the district court that the board’s decision denying Carter accidental
disability benefits was supported by substantial evidence. We accordingly affirm
the court’s judgment annulling Carter’s writ of certiorari. 3
I. Background Facts and Proceedings
Brooke Carter worked as a police officer for the City of Waterloo for more
than thirty years, starting in 1990 when she was just twenty years old. In 2001,
Carter was promoted to sergeant and became a shift supervisor on patrol. During
one of her shifts in December 2014, Carter and two other officers—Ben Bloker and
Randall Hammitt—were dispatched to a disorderly conduct call involving Kelvin
Plain Jr. Dispatch notified the officers that Plain was outside the reporting party’s
residence making threats and cautioned that he was “dangerous, carries
weapons.” Carter was familiar with Plain and knew he did “not like law
enforcement officers whatsoever,” had a “volatile temper,” and “usually had a
weapon with him.”
Bloker arrived on the scene first. A video from his squad car captured the
officers’ interaction with Plain, who was sitting in a vehicle parked in the driveway.
Bloker described Plain as “highly agitated and very upset.” After talking to Plain
and the reporting party, Bloker told Plain that he needed to leave. Plain was still
very upset, according to Bloker, but drove away. As Plain was leaving, Hammitt
pulled up in his squad car, with Carter not far behind. Bloker filled them in on what
happened, and Carter decided to turn her car around at the dead-end street,
intending to “stay there until [the] officers had cleared the scene.” Hammitt was
still in his car, facing her. Meanwhile, Plain called the reporting party, who was
standing outside with Bloker. She answered on speaker phone, and Plain can be
heard on the video, ranting at her.
With her car turned around and facing the street, Carter saw Plain’s vehicle
come speeding back towards them, accelerating the whole time. She didn’t have 4
time to do anything except honk her horn to warn the other two officers. Bloker
heard the horn and drew his weapon, but he could not stop Plain before he rammed
into the back of Hammitt’s squad car. The impact pushed Hammitt’s car into a
parked car and then into Carter’s squad car, before slamming into a tree.
Because of how fast Plain was going when he hit Hammitt’s car—at least
fifty-seven miles per hour—both Carter and Bloker thought Hammitt died in the
crash. They drew their weapons and cautiously approached Plain’s vehicle, “fully
expect[ing] him to start shooting us.” But they managed to get Plain on the ground
and arrest him. As Carter and Bloker were handcuffing Plain, Hammitt climbed out
the passenger side of his squad car and ran over to assist them. None of the
officers suffered serious physical injuries from the incident.
But the traumatic incident continued to affect Carter mentally, with feelings
of extreme guilt, shame, and failure. She tried to cover up those feelings by
drinking alcohol, explaining the “worse the feelings got, the more I drank.”
Although this continued for years, Carter kept working as a police officer until
August 2021, when she sought substance-use treatment.
Carter completed an inpatient treatment program, following which she
sought counseling. She was diagnosed with post-traumatic stress disorder,
substance use disorder, and anxiety, which her treatment providers linked to the
incident with Plain in December 2014. Carter did not return to the police
department after finishing treatment, instead applying for accidental disability
benefits in November 2021. The system’s executive director notified Carter in April
2022 that while she “qualified for an ordinary disability pension instead,” she was
not entitled to accidental disability benefits because the “evidence does not 5
establish [her] incapacity was caused by an incident which was unusually stressful
for police officer work.” Carter appealed that decision to a three-person disability
appeals committee from the system’s board of trustees. At the hearing on her
appeal, the City waived its right to present evidence or question Carter’s witnesses,
who included Carter, Bloker, Hammitt, and another officer.
Following the hearing, the committee denied Carter’s appeal for accidental
disability benefits but affirmed her award of ordinary disability benefits. The
committee first determined that Carter had to establish the legal causation
component of her claim under the Cornish-Moon standard, which provides that “an
accidental disability pension is payable under Iowa Code [chapter] 411 for a mental
injury only if the injury was caused by workplace stress of greater magnitude than
the day-to-day stresses experience by other police officers.” See Cornish, 572
N.W.2d at 922; Moon, 548 N.W.2d at 568. The committee found that because
Carter and other “officers often face dangerous suspects and entered this situation
aware that the suspect was likely armed,” the incident “was not above and beyond
the day to day stress experienced by other police officers.” The committee
alternatively found that if, as Carter urged, the supreme court meant to
replace the legal causation standard it adopted in Moon and Cornish with the standard it recently announced in the workers’ compensation context in Tripp, Applicant’s mental injury still does not meet that standard. For the Tripp standard to apply, there must be a readily identifiable event, which is sudden, traumatic, and unexpected or unusual. The Incident was not sudden, unexpected, or unusual.
The committee’s decision was ratified by the full board.
Carter then petitioned for a writ of certiorari from the district court, claiming
the board acted illegally by applying the wrong legal causation standard and 6
issuing a decision that was not supported by substantial evidence. In a thorough
and well-reasoned decision, the court annulled the writ. On Carter’s first claim, the
court found that “[u]ntil the Iowa Supreme Court says otherwise, the Cornish-Moon
test remains the legal causation test in Iowa for a chapter 411 disability action.” As
for her second claim, the court concluded “that substantial evidence supports the
[board’s] decision to deny the award of accidental disability retirement benefits
under both the Cornish-Moon legal causation standard that is the current law and
the Tripp legal causation standard that Carter urges the Court to apply.”
II. Standard of Review
Because Iowa Code chapter 411 lacks any appeal procedure, Carter
properly challenged the board’s decision through her certiorari action. See
Cornish, 572 N.W.2d at 921. We review a district court’s ruling in a certiorari action
for correction of errors at law. See Carstensen v. Bd. of Trs. of Police Ret. Sys.,
253 N.W.2d 560, 561 (Iowa 1977).
Certiorari actions are proper when an inferior board, exercising judicial functions, acts illegally. An inferior board acts illegally if it has not acted in accordance with a statute or if its decision was not supported by substantial evidence. Evidence is substantial “when a reasonable mind could accept it as adequate to reach the same findings.” Evidence is still substantial even though it would have supported contrary inferences.
Cornish, 572 N.W.2d at 921 (citation omitted).
III. Analysis
A. Legal Standard
Claims for accidental disability benefits under Iowa Code section 411.6(5)
are reviewed for “(1) permanent incapacity; (2) causation by a work duty; and
(3) ‘injury’ or ‘disease.’” Id. at 922. The parties do not dispute that Carter’s 7
disability is an injury resulting in permanent incapacity. But Carter must also prove
medical and legal causation. See id. (noting that in “workers’ compensation
cases, factual causation means medical causation: the employee’s injury must be
causally connected to the employee’s employment”). Only legal causation is at
issue here. See id. (explaining that “[l]egal causation is a policy question: How far
will the law extend responsibility to those consequences which have in fact been
produced?”).
Legal causation for mental injuries under section 411.6(5) is determined by
the Cornish-Moon standard referred to above: “the claimant must show that the
mental injury was caused (1) in fact by mental stimuli in the work environment,
and (2) by workplace stress ‘of greater magnitude than the day-to-day mental
stresses experienced by other workers employed in the same or similar jobs,
regardless of their employer.’” Moon, 548 N.W.2d at 568 (citation omitted). The
court in Moon adopted this standard from Dunlavey v. Economy Fire and Casualty
Co., 526 N.W.2d 845 (Iowa 1995), a workers’ compensation case under Iowa
Code chapter 85, concluding that “the rationale of Dunlavey would be equally
pertinent in a disability case under chapter 411.” In reaching this conclusion, the
court noted that “‘[h]istory shows a legislative intent . . . to treat persons entitled to
chapter 411 benefits and workers’ compensation benefits alike’ and ‘the systems
[chapters 411 and 85] are not identical but it is apparent they serve the same
purposes.’” Id. (second and third alterations in original) (quoting Goebel v. City of
Cedar Rapids, 267 N.W.2d 388, 391 (Iowa 1978)).
Because the Cornish-Moon standard came from the workers’ compensation
realm, Carter asserts the supreme court’s decision in Tripp—which revamped the 8
legal causation standard under chapter 85 for mental injuries “traceable to a
readily identifiable work event,” 977 N.W.2d at 470—also applies to accidental
disability benefits under chapter 411. We disagree.
The issue before the court in Tripp was “whether Iowa’s workers’
compensation statute places on emergency responders a different, higher bar to
be eligible for benefits for trauma-induced mental injuries suffered on the job than
workers in other roles with identical injuries.”1 977 N.W.2d at 460. In concluding
it did not, the court explained:
Focusing on the employee’s own job in determining an “unexpected strain” places workers routinely tasked with addressing traumatic incidents, such as emergency dispatchers, paramedics, police officers, and firefighters, in a disfavored position as compared with other workers. They would bear a burden to prove hyper- unexpected causes and hyper-unusual strains—some extraordinary species of traumatic event, above and beyond the perilous events that they regularly confront—to qualify for benefits that those in less hazardous professions receive by meeting a far lower bar.
Id. at 466. Since nothing in the workers’ compensation statute required that result,
the court concluded that “[f]or mental injuries ‘based on a manifest happening of
a sudden traumatic nature from an unexpected cause or unusual strain’ legal
causation is established without regard to the regular duties of the particular
employee or other employees in similar positions.” Id. at 467 (citing Brown v. Quik
Trip Corp., 641 N.W.2d 725, 728–29 (Iowa 2002)).
Carter argues that because the “Tripp Court specifically referenced police
officers in holding that there is nothing that requires police officers to meet a higher
burden,” its standard must also apply to chapter 411 accidental disability benefits
1 The emergency responder in Tripp was a 911 dispatcher who answered a call
from the mother of a dead infant. 977 N.W.2d at 461. 9
for police officers. In further support of this argument, she notes the court in Tripp
stated the Cornish-Moon cases “offer[ed] little of substance” to its analysis. Id. at
468. But, as Tripp explained, “the words of the workers’ compensation statute”
were the polestar for its analysis. Id. at 467. And the court was careful to limit its
holding to workers’ compensation benefits: “Our workers’ compensation statute
doesn’t impose a higher burden on workers with jobs that involve frequent brushes
with traumatic events than workers in other occupations. Workers’ compensation,
it bears repeating, is a statutory creation, with eligibility for benefits determined by
what the statute provides.” Id. at 470.
For these reasons, we agree with the district court that while Tripp may have
“call[ed] into question the continuing viability of the Cornish-Moon legal causation
test going forward, at least for now, that legal standard remains the governing law
in a chapter 411 disability case in Iowa.”2 See id. at 482 (Waterman, J.,
dissenting) (stating the “majority effectively overrules Moon, where we had
2 We note that effective July 1, 2024, section 411.6(5) was amended to add a new
paragraph: To establish that a mental incapacity occurred as the natural and proximate result of an injury or disease incurred in or aggravated by the actual performance of duty or arising out of and in the course of the employment, or while acting, pursuant to order, outside of the city by which the member is regularly employed, the member must demonstrate that the mental incapacity is traceable to a readily identifiable work event constituting a manifest happening of a sudden traumatic nature from an unexpected cause or unusual strain in the workplace. Whether an incident is traumatic, unexpected, or unusual is determined by comparing the incident, and not the effect on the member, to the experiences of other police officers or fire fighters in Iowa. A member must be able to trace their mental injury to a specific event or events in the workplace to be eligible for accidental disability benefits. Iowa Code § 411.6(5)(0d) (Supp. 2024). 10
confirmed that the compensability of a first responder’s mental injury triggered by
one or two specific incidents is determined under Dunlavey by reference to the
claimant’s occupation as a police officer”). Because the court in Tripp did not
expressly overrule the Cornish-Moon legal causation standard for accidental
disability benefits under chapter 411 for mental injuries, we conclude the board
did not act illegally in applying that standard to Carter’s claim. See State v. Miller,
841 N.W.2d 583, 584 n.1 (Iowa 2014) (“Generally, it is the role of the supreme
court to decide if case precedent should no longer be followed.”).
B. Substantial Evidence
This brings us to the determinative question on appeal—whether the
board’s decision denying Carter accidental disability benefits under the Cornish-
Moon standard was supported by substantial evidence?3 We find no error of law
in the district court’s conclusion that it was.
In denying Carter’s claim, the board considered a non-exclusive five-factor
test to determine whether the incident involved “workplace stress ‘of greater
magnitude than the day-to-day mental stresses experienced by other workers
employed in the same or similar jobs, regardless of their employer.’” Moon, 548
N.W.2d at 568 (citation omitted). Those factors included:
(1) whether the incident(s) is something for which the member received training; (2) whether, with respect to the incident(s), the member’s department or supervisor followed or deviated from standard protocols in the profession; (3) the member’s degree of familiarity with a victim prior to the incident; (4) the culpability or
3 Although the board also applied the Tripp standard in denying Carter’s claim for
accidental disability benefits, we need not address Carter’s argument that its decision under that standard was not supported by substantial evidence since we have concluded that the board correctly applied the Cornish-Moon standard. 11
innocence of the victim(s); and (5) whether the incident occurred in close proximity to other more stressful incidents.
Under those factors, the board found:
There was no testimony that Applicant’s department or supervisors failed to follow standard protocols in connection with the Incident. While no evidence was presented as to whether Applicant had received training for situations similar to the Incident, Applicant testified that it was common for her to assist with difficult situations, and she and the other officers were aware the suspect had a history of carrying weapons and assaulting officers when they arrived at the call on December 14. The Incident involved a potential for severe injury to an individual who was a colleague and friend to Applicant. . . . The Committee recognizes that fact. However, in light of the fact that Applicant and officers often face dangerous suspects and entered this situation aware that the suspect was likely armed, the Committee assesses that the Incident was not above and beyond the day to day stress experienced by other police officers.
Carter challenges these findings with other evidence in the record, including
that “each of the seasoned officers involved testified they had never been involved
in a similar incident so traumatic” and that while the officers may have been
prepared for a physical confrontation with Plain, they were not prepared for what
actually occurred—“an attack by vehicle . . . with the intent to kill or injure one of
the police officers.” See Cornish, 572 N.W.2d at 925 (“[T]he more extraordinary
the incident the greater the stress”).
While this evidence could support a finding that the stress of the incident
went beyond the day-to-day stress of other police officers, our review is narrow.
See Kirkman v. Disability Appeals Comm., Mun. Fire and Police Ret. Sys of Iowa,
No. 01-1963, 2002 WL 31757508, at *3 (Iowa Ct. App. Dec. 11, 2002) (affirming
the board’s denial of accidental disability benefits despite conflicting evidence
about the unusually traumatic nature of the incident); accord Cornish, 572 N.W.2d
at 925–26; Moon, 548 N.W.2d at 569–70. As the court in Cornish explained, 12
Evidence is not insubstantial merely because it would have supported contrary inferences; nor is evidence insubstantial because of a possibility of drawing two inconsistent conclusions from it. In determining whether evidence is substantial to support a decision, the ultimate question is not whether the evidence supports a different finding, but whether the evidence supports the finding actually made.
572 N.W.2d at 926 (internal citation omitted). Because Carter had the burden of
proof on her claim, which she failed to meet before the board, she can prevail on
appeal only if she “was entitled to such benefits as a matter of law.” Moon, 548
N.W.2d at 569. We agree with the district court that, given “the sad reality of police
work,” Carter did not meet this standard for the reasons the board stated. See,
e.g., Chiafos v. Mun. Fire & Police Ret. Sys., 591 N.W.2d 199, 202 (Iowa 1999)
(stating significant physical traumas are “not unusual in the often violent
experience of police officers”). Buttressing the board’s decision is evidence that
the officers knew Plain disliked law enforcement; Plain was still “very upset” when
he drove away, only to call back minutes later screaming at the reporting party;
and the entire event was short—with Hammitt jumping out of his squad car and
joining the other officers within sixty seconds after the crash.
Yet Carter urges that we should reach a different result because there was
no conflicting evidence in the record about the unexpectedly traumatic nature of
the event since the “City was present at the hearing but declined to participate and
offered no witness[es] or exhibits.” As stated above, however, the question is not
whether the evidence is unrebutted but whether the evidence—rebutted or not—
“supports the finding actually made.” See Cornish, 572 N.W.2d at 926. The board,
which includes police officers, “is more than qualified to weigh the evidence and
determine what are and what are not unusually stressful incidents for police 13
officers” because “of its members’ own work experience.” Id.; accord Kirkman,
2002 WL 31757508, at *3.
For these reasons, we conclude the district court correctly determined that
substantial evidence supported the board’s denial of accidental disability benefits
for Carter’s mental injury.
AFFIRMED.