U.S. Air Force Staff Sgt. Whitni Levering, 42nd Electronic Combat Squadron airborne linguist, assembles canopy supports on a life raft during a water survival training refresher course at Davis-Monthan Air Force Base, Ariz., Jan. 5, 2015. When fully assembled, canopies help protect occupants of the life raft from the elements while at sea. (U.S. Air Force photo by Airman 1st Class Chris Drzazgowski/Released)