U.S. Air Force Capt. Dave Prakash, aircraft commander and flight surgeon, straps into the instructor pilot seat of a 307th Bomb Wing B-52H Stratofortress under the watchful eye of Philip Hardinger, July 24, 2014, at Barksdale Air Force Base, La. Hardinger is the base Chiropractor assigned to the 2nd Medical Squadron and is studying the physical effects on the body from sitting long hours in an ejection seat. (U.S. Air Force photo by Master Sgt. Greg Steele/Released)