NASA's Global Hawk Unmanned Aircraft (IMAGE) NASA/Goddard Space Flight Center Caption NASA's Global Hawk unmanned aircraft project celebrated a flight milestone on Sept. 17, 2013. The two Global Hawks reached a combined 100 NASA flights during the deployment at the Wallops Flight Facility. In this photo, NASA's Global Hawk 872 takes off from Runway 04 on Sept. 4. Credit NASA's Wallops Flight Facility Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.