ScanEagle is a low-cost, long-endurance UAV developed and built by Boeing and the Insitu Group. The U.S. Marine Corps and U.S. Navy are using ScanEagle to loiter over trouble spots and provide real-time intelligence, surveillance and reconnaissance information. The UAV, which is four feet long with a 10-foot wingspan, carries either an inertially stabilized electro-optical or an infrared camera. The camera allows the operator to easily track both stationary and moving targets. ScanEagle is launched autonomously via a pneumatic wedge catapult launcher and flies pre-programmed or operator-initiated missions guided by GPS and its onboard flight-control system. It is retrieved using a "Skyhook" system in which the UAV catches a rope hanging from a 50-foot high pole. The patented system allows ScanEagle to be runway independent and operate from forward fields, mobile vehicles or small ships.