A U.S. Air Force 17th Special Operations Squadron loadmaster performs a buddy check on the aircrew eye and respiratory protection system (AERPS) equipment Jan. 31, 2018, off the coast of Okinawa, Japan. The 17th SOS executed in-flight training with AERPS equipment as a part of routine Ability to Survive and Operate (ATSO) training. (U.S. Air Force photo by Capt. Jessica Tait)