U.S. Air Force Staff Sgt. Lucinda Collins, with the 421st Combat Training Squadron at Joint Base McGuire-Dix-Lakehurst, N.J., prepares an ammunition clip for the security forces tactics team competition for Air Mobility Rodeo at Joint Base Lewis-McChord, Wash., on July 26, 2011. The Air Mobility Rodeo is the Air Mobility Command?s biennial readiness competition. It focuses on improving the professional core abilities of air mobility forces from the U.S. Air Force and Air Force Reserve as well as allied nations.