FILE - This Oct. 25, 2015, file photo, shows Tennessee Titans outside linebacker Derrick Morgan on the sideline in the second half of an NFL football game between the Titans and the Atlanta Falcons, in Nashville, Tenn. Tennessee defensive lineman Derrick Morgan says he's retiring after playing nine NFL seasons for five head coaches. Morgan announced his decision Monday on social media and with a post at The Players' Tribune. (AP Photo/Weston Kenney)

FILE- In this Oct. 25, 2015 file photo, Atlanta Falcons defensive back Phillip Adams arrives for an NFL football game against the Tennessee Titans, in Nashville, Tenn. The gunman who killed multiple people including a prominent doctor in South Carolina was the former NFL pro, who killed himself early Thursday, April 8, 2021, according to a source who was briefed on the investigation. (AP Photo/Mark Zaleski, File)

FILE - In this Oct. 25, 2015, file photo, Atlanta Falcons defensive back Phillip Adams arrives for an NFL football game against the Tennessee Titans, in Nashville, Tenn. On Tuesday, Dec. 14, 2021, a coroner is set to release the results of a brain test for chronic traumatic encephalopathy on former NFL player Adams, who was accused of fatally shooting six people in Rock Hill, South Carolina, before killing himself in April. Adams' family agreed after his death to have his brain tested for the degenerative disease linked to head trauma and concussions. (AP Photo/Mark Zaleski, File)