The F/A-18 Hornet is a US Navy and Marine Corps fighter and ship attack aircraft developed as a successor to the F-4 Phantom and A-7 Corsair ship attack aircraft. In 1974, the U.S. Navy announced a plan aimed at the development of the next ship combat attack aircraft. The candidates for this are General Dynamics YF-16 and Northrop YF-17 Light Fighter. The US Navy is equipped with a semi-active radar-guided AAM Sparrow, and has sought to introduce a fire control system to operate it and various maintenance to operate an aircraft carrier. As a result of examination, it was decided to make a major redesign with the large, twin-engine YF-17 as the prototype, and McDonnell Douglas will develop it as the main contract company. Unit 1 was completed on September 13, 1978, and successfully completed its first flight in November of the same year. Unlike previous fighters, the F/A-18 can perform both fighter and attack missions with a single model. Due to this, the United States Navy has established the Combat Flight Attack Corps (VFA) that has the duties of both combat squadrons and attack squadrons, and the Marine Corps is operating with VMFA as the successor to the Phantom. The A type is the first mass-produced type, and the B type is a double-seat trainer type with an additional rear seat without extending the body. The C type is the A type and the D type is the B type. The night attack ability is improved. F/A-18 Hornet has been adopted by many foreign countries such as Australia and Canada in addition to the US Navy and Marine Corps.