Staff Sgt. Eric Jancaitis removes an engine intake plug. U.S. Air Force Staff Sgt. Eric Jancaitis, a C-130 Hercules crew chief assigned to the 314th Aircraft Maintenance Squadron, Little Rock Air Force Base, Ark., removes an engine intake plug in preparation for the Mobility Air Forces Exercise at Nellis Air Force Base, Nev., on May 20, 2009. Approximately 12 U.S. bases participate in the exercise at the U.S. Air Force Weapons School twice a year, testing C-17 Globemaster III and C-130 Hercules aircrews’ ability to join together in formation at a specific time and location to drop a brigade-size force anywhere in the world. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 961085-K-NWQ80-951.jpg Photo Gallery