Brave Defender
Chief Master Sgt. of the Air Force James A. Roy experiences a vehicle roll-over in a Humvee with the 96th Ground Combat Training Squadron?s simulator May 6, 2011, at Eglin Air Force Base, Fla. Chief Roy received a hands-on tour of Air Force Materiel Command's "Brave Defender" training there. (U.S. Air Force photo/Samuel King Jr.)