sentences:  Prior to its closure, it had been home to numerous aviation squadrons, primarily those land-based patrol squadrons operating the P-2 Neptune and carrier-based antisubmarine and airborne early warning squadrons operating the S-2 Tracker, the E-1 Tracer and various modified versions of the A-1 Skyraider.NAS Quonset Point was also the off-season home of Antarctic Development Squadron Six (VX-6, later VXE-6) during the 1950s, 1960s and 1970s, operating the LC-47 Skytrain, LP-2J Neptune, C-54 Skymaster, C-121 Constellation, and eventually the LC-130F and LC-130R Hercules, as well as a variety of helicopters.In 1950, Coast Guard Air Detachment Quonset Point was established as a sub unit of CGAS Salem, Massachusetts.