Airman 1st Class Frederick Gutierrez, 22nd Operations Support Squadron aircrew flight equipment apprentice, gives a thumbs up to Senior Airman Jeff Short, 22nd Operations Support Squadron aircrew flight equipment journeyman, to indicate a positive oxygen mask test July 20, 2010, McConnell Air Force Base, Kan. Aircrew flight equipment Airmen maintain and repair aircrew eye, respiratory and protective systems annually. The Airmen inspect more than 400 helmets each year. (U.S. Air Force photo/Senior Airman Courtney Witt)
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