PETERSON AIR FORCE BASE, Colo. —Dennis Hall wears his son’s Air Force graduation ring with his own wedding ring to always have his son close to him. On November 14, 2018 at Peterson Air Force Base, Colorado, he talks about his son, Capt. Ryan Hall who died on February 18, 2012 when his single-engine U-28 aircraft went down returning from an intelligence, surveillance and reconnaissance mission in Djibouti on the Horn of Africa. (U.S. Air Force photo by Staff Sgt. Alexandra M. Longfellow/Released)