U.S. Army Spc. David Plummer, a second class diver assigned to the 569th Engineer Dive Detachment, practices rescuing Sgt. Gordon Yeaple, a salvage diver assigned to the 569th Engineer Dive Det., during training in the James River at Fort Eustis, Va., March 18, 2016. Plummer was a stand-by diver for the training, a role that is required for each dive in case a fellow diver needs to be rescued. (U.S. Air Force photo by Staff Sgt. Natasha Stannard)