Shipborne guns have been used against shore defences since medieval naval warfare. The ensuing battle was essentially a giant aerial dogfight interspersed with shipborne anti-aircraft fire. Ka-27 shipborne ASW and search-and-rescue (SAR) helicopters. The first prototype shipborne radar system was installed on the "USS Leary" in April 1937. Two AS565 Panther helicopters were purchased for shipborne duties, and delivered in 2005. The B-26 was brought down by fire from both Dewanto and shipborne anti-aircraft gunners. There is also a shipborne version of the missile, with the launcher holding six missiles. In addition, aircraft and shipborne applications became possible as smaller components were developed. COAs have been granted for both land and shipborne operations. In addition, the Fatimid fleet had a standing force of marine infantry for shipborne combat. The 279th Independent Shipborne Assault Aviation Regiment was established in 1973. The loss of "Ark Royal" proved the end of Sam's shipborne career. Even then, VLRs proved invaluable in co-operation with shipborne "Huff Duff".