the 2nd MAW Commanding General's award for achievement in competitive exercises which took place while the squadron was deployed to NAS Roosevelt Roads, Puerto Rico. On 31 October 1964, the Thunderbolts became the first Marine squadron in 2nd Marine Aircraft Wing to transition to the F-4 Phantom II and receive its current designation as Marine Fighter Attack Squadron 251 (VMFA-251). The Thunderbolts received the CNO's flight safety award in 1967 and again in 1969 as well as the Fleet Marine Force Atlantic safety award for the years 1967, 1968 and 1970. In 1969 they also received the Robert M. Hanson award, presented annually to the "most outstanding Marine fighter squadron of the year." Training exercises were conducted in Puerto Rico in 1964-1965, 1971, and 1973. In April 1971 the squadron stood "hot pad" duty at Naval Air Station Key West, Florida and provided additional support for the North American Air Defense Command. Further deployments in support of NATO were made to Cigili Air Base, Turkey in 1973 and to Rota, Spain in 1975 and the Thunderbolts participated in a Western Pacific deployment to Japan, Korea, and the Philippines during 1977-1978. In September 1980 the Thunderbolts deployed to Trondheim in the Kingdom of Norway in support of NATO Exercises. In April 1982, the Thunderbolts again deployed to Keflavik in Iceland where the squadron intercepted six Soviet Bear Bombers while on "hot pad" alert. The squadron deployed to the Kingdom of Denmark in September 1982 for NATO Exercise "Northern Wedding 82" during which 102 Soviet aircraft flew sorties against NATO naval forces. The squadron was placed on alert for possible redeployment to Lebanon before returning to the United States. After twenty-one years and 85,000 flight hours, VMFA-251 flew its last F-4S Phantom in November 1985. In January of the following year, the Thunderbolts transitioned to the F/A-18 Hornet. The squadron stood up as the sixth Marine F/A-18A squadron the following August and reported full combat ready in March 1987. The 1990s The squadron transitioned from the aging F/A-18A to the F/A-18C during the early 1990s. This change also increased the squadron's mission capable rate. From January to April 1994, the Thunderbolts flew close air support missions while deployed to Aviano, Italy supporting Operation Deny Flight in Bosnia-Herzegovina. These missions marked the first combat sorties for a Marine squadron in Europe since World War I. In 1994, the squadron became part of the