U.S. Air Force Staff Sgt. Jordan Addison, 316th Operations Support Squadron Aerospace Physiology operations and administration noncommissioned officer in charge, guides a tour of the altitude chamber at Joint Base Andrews, Md., Dec. 17, 2024. A total of 656 students underwent training in the altitude chamber throughout 2024. (U.S. Air Force photo by Airman 1st Class Daniel Walderbach)