ROBINS AIR FORCE BASE, Ga. -- Sgt. Leslie Batten, NCOIC of Aerospace and Operational Physiology Flight monitors Capt. Pierre Nelson, Commander Aerospace Physiology Flight as they demonstrate the use of the Reduced Oxygen Breathing Device (ROBD) at Robins. The AOPT flight with the 461st Operations Support Squadron trains aircrew members on the dangers of hypoxia in a safe environment using an ROBD. (U.S. Air Force photo by Joseph Mather)