U.S. Air Force Col. Vann Green taxis under a water arc after completing his final flight as the 4th Fighter Wing vice commander on Seymour Johnson Air Force Base, N.C., April 4, 2013. Green will depart Seymour Johnson Air Force Base to become the Chief of Strategic Studies Group for the Chief of Staff of the Air Force. (U.S. Air Force photo by Airman 1st Class John Nieves Camacho/Released)