Elbit Systems makes fighter jets feistier and soldiers' eyes sharper by supplying and upgrading defense electronics for airborne, space, land, and naval platforms, including fixed wing and helicopter support. Elbit's contracts include work on the F-15, F-16, F-18, V-22 Osprey, Bradley Fighting Vehicle, and Israeli Merkava tank. Products include advanced weapons, helmet-mounted vision systems, cockpit management systems, unmanned ground and airborne vehicles, communication systems, electronic warfare, and satellite electro-optic payloads. The company obtains some funding for research and development projects from the Government of Israel Chief Scientist Office. The US accounts for about 30% of sales.