U. S. Air Force Staff Sgt. Daniel Ryan, an aerial porter, with the 67th Aerial Port Squadron, Hill Air Force Base, Utah, checks the shipping regulations during the pallet build-up competition at Air Mobility Rodeo 2011, Joint Base Lewis-McChord, Wash., July 27. Rodeo is the U.S. Air Force's and Air Mobility Command's premier international combat skills and flying operations competition designed to develop and improve techniques, procedures, and interoperability, while optimizing international mobility partnerships and enhancing mobility operations.