NIGHT WORK U.S. Air Force maintenance technicians conduct preflight checks on an RQ-4 Global Hawk unmanned aerial vehicle at an undisclosed location in Southwest Asia, Nov. 23, 2010. The airman is assigned to the 380th Expeditionary Operations Group. SHARE IMAGE: Download Image: Full Size (0.05 MB) Photo By: VIRIN: 777360-F-XJU83-946.jpg Photo Gallery