$BTC The Hermes 450 is a medium-sized multi-payload unmanned aerial vehicle (UAV) designed by Israeli defence company Elbit for tactical long endurance missions. It has an endurance of over 20 hours, with a primary mission of reconnaissance, surveillance and communications relay. Payload options include electro-optical/infrared sensors, communications and electronic intelligence, synthetic-aperture radar/ground-moving target indication, electronic warfare, and hyperspectral sensors.