photojournalist
Tech. Sgt. Matthew Duncan, an aircrew flight equipment specialist assigned to the 161st Air Refueling Wing, teaches KC-135 Stratotanker aircrew members how to don their life preservers and board a 20-man life raft to prepare for rescue at Lake Pleasant aquatic center, Ariz., May 7, 2017. Water survival training is conducted every two years at the wing to refresh the aircrew on using the life support equipment on board the aircraft in the event of an emergency. (U.S. Air Force photo by Tech. Sgt. Michael Matkin)