ROBINS AIR FORCE BASE, Ga. – Capt. Pierre Nelson, Aerospace and Operational Physiology commander 461st Operations Support Squadron, and Tech. Sgt. Leslie Batten, AOPT Flight non-commissioned officer-in-charge, adjust the parameters of a Reduced Oxygen Breathing Device at Robins Air Force Base, Georgia, Jan. 24, 2020. The flight uses the ROBD to train aircrew members on the dangers of hypoxia in a safe environment. (U.S Air Force photo by Joseph Mather)