NATO's first Alliance Ground Surveillance aircraft arrived at Edwards Air Force Base, Calif., Dec. 19, 2015, completing its first flight. The aircraft took off from U.S. Air Force Plant 42 in Palmdale, Calif., and arrived at Edwards AFB. The test flight marked the start of six months of ground and airborne testing at Edwards AFB before the aircraft is sent to its new home in Sigonella, Italy. NATO AGS is a derivative of the wide-area surveillance Global Hawk, with a few small changes in the communications software to meet certain criteria for operation in Europe. (U.S. Air Force photo/Chris Okula)