Aircrew flight equipment help pilots breath easy
U.S. Air Force Airman 1st Class Osvaldo Laracuente, 354th Operations Support Squadron aircrew flight equipment technician, tacks bayonet straps on a Mask Breathing Unit March 21, 2012, Eielson Air Force Base, Alaska. During flight, bayonet straps ensure the MBU stays donned to the aircrew helmet protective system. (U.S. Air Force photo/Staff Sgt. Jim Araos)