A line of C-130 Hercules aircraft taxis during the U.S. Air Force Weapons School Mobility Air Forces Exercise on Nellis Air Force Base, Nev., May 19, 2010. About 40 C-17 Globemaster and C-130 Hercules aircraft assembled in aerial formations over the Nevada Test and Training Range to conduct air and ground operations as part of the biannual exercise. U.S. Air Force photo by Airman 1st Class Brett Clashman