The South Dakota Air and Space Museum
Master Sgt. Eric Grim, 28th Bomb Wing South Dakota Air and Space Museum curator, places a MA-2 flight helmet in a storage bin at the SDA&SM in Box Elder, S.D., Sept. 14, 2012. The MA-2 flight helmet was used in flights above 50,000 feet during the 1950s. The museum houses a wide variety of military artifacts, uniforms and historical documents received from donors around the globe on display. (U.S. Air Force photo by Airman 1st Class Anania Tekurio/Released)