A special warfare trainee from the 352nd Special Warfare Training Squadron participates in a memorial physical training session at the Triangle Pool on Keesler Air Force Base, Miss., Aug. 9, 2019. The event was held in memory of Staff Sgt. Andrew Harvell, combat controller, who was killed in action on Aug. 6, 2011. (U.S. Air Force photo by Kemberly Groue)