The Gray Eagle unmanned aircraft system enables combatant commanders to conduct long-dwell, persistent-stare, wide-area reconnaissance, surveillance, target acquisition, communications relay and attack missions. The U.S. Army Research Laboratory (ARL) has partnered with industry and academia to improve the performance and efficiency of the Gray Eagle and unmanned vehicles even further with the creation of the Center for UAS Propulsion, part of ARL’s Open Campus. (Photo by Sgt. Ken Scar, 7th Mobile Public Affairs Detachment)