Airman 1st Class Lacey McGee, 811th Operations Support Squadron aircrew flight equipment technician, assembles a visor for an HGU-56/P helmet on Joint Base Andrews Md., May 26, 2015. Helmets undergo an inspection every 90 days to ensure they remain safe and operable. (U.S. Air Force photo/Airman 1st Class Ryan J. Sonnier)