Aerospace Physiology
U.S. Army Sgt. 1st Class Jacob Lindholm, 1/10th Special Forces Group, gets fitted for his flying mask before training by Staff Sgt. Whitney Moore, 20th Aerospace Medicine Squadron physiology technician, Shaw Air Force Base, S.C., Aug. 10, 2011. High altitude training is a necessity before flying and must be completed to be on flying status. (U.S. Air Force photo by Airman 1st Class Ashley Gardner)(Released)