A piece of history and Navy and Marine Corps tradition was lost in 1986 when the last unit of Marines left NAS Jacksonville. Marine Barracks Jacksonville had been one of the first groups to arrive at the base in 1940, but left due to mission realignments and a reduction in Marines authorized for Marine Corps Security Force duties at U.S. Naval installations. Force reductions continued in the 1990s and early 2000s with the elimination of P-3 squadrons (VP-24, VP-49, VP-56) and H-60 squadrons (HS-1, HS-9, HS-75).
