An RQ-4 Global Hawk from Andersen Air Force Base, Guam is towed down the taxiway at Misawa Air Base, Japan, May 24, 2014. The RQ-4 Global Hawk is a high-altitude, long-endurance unmanned aircraft system with an integrated sensor suite that provides intelligence, surveillance and reconnaissance, or ISR, capability worldwide. (U.S. Air Force photo/Staff Sgt. Nathan Lipscomb)