Like most BRAC sites, environmental contamination was detected in 1986, and since 1993 numerous remedies and long term monitoring of ground water are in place.

Some historians and former Navy personnel allege that a ZP-11 blimp, the K-14, which crashed with loss of life off the coast of Bar Harbor, Maine on 2 July 1944 was actually shot down by a German submarine.

These six blimps initially conducted nighttime anti-submarine warfare operations to complement the daytime missions flown by FAW-15 aircraft (PBYs and B-24s) using magnetic anomaly detection to locate U-boats in the relatively shallow waters around the Straits of Gibraltar.

Later, ZP-14 K-ships conducted minespotting and minesweeping operations in key Mediterranean ports and various escort missions including that of the convoy carrying Franklin Roosevelt and Winston Churchill to the Yalta Conference in early 1945.

Naval Air Facility South Weymouth was placed into caretaker status on 30 June 1949 and downgraded again to an auxiliary landing field or "ALF".

Mainly, these research projects involved experimental electronic equipment such as radars associated with air defense and anti-submarine warfare systems.

The construction work required on the eastern end of this runway permanently severed Union Street, which had served as a major thoroughfare connecting the towns of Rockland and Weymouth.

Blimp operations were discontinued at NAS South Weymouth in July 1961 in advance of the disestablishment of the Naval Air Development Unit on 1 October.

In March 1957, a ZPG-2, the Snow Bird, piloted by Commander Jack Hunt, USN, took off from South Weymouth, and landed 10½ days later at Naval Air Station Key West, after making two crossings of the Atlantic Ocean.

Both squadrons flew operational ASW patrols from NAS South Weymouth and detachment sites such as Key West and Guantanamo Bay, Cuba for nearly a year.

The new hangar was not completed until November 1970, due in large part to a disaster on 18 August 1967 when several concrete arches collapsed, killing two civilian crane operators.

[5] The base had target ranges at the nearby Nomans Land Island and the Liberty Ship SS James Longstreet.

[citation needed] A condominium community development called "SouthField" was planned,[11] construction work began during December 2010 and the first homes were sold and occupied by summer 2011.

"[12] Starwood wants responsibility for providing public services and collecting property taxes to shift from Tri-Town to the three towns.

[12] In August, the state Senate enacted Starwood Land Ventures' proposed legislation and thus reduced Tri-Town's role.

[16] Plans include a market in the former hangar, arch, college campus, movie theatre, hotel, and sports complex.

On March 26, 2020, a fire broke out in abandoned buildings on the grounds of the former Naval Air Station,[17] about 1,000 feet (300 m) from the nearest housing.

An A-4 Skyhawk jet mounted on a pedestal in a small park called the "Shea Memorial Grove", named for Squantum reservist CDR John "Jack" Shea who was killed in action when the aircraft carrier USS Wasp was sunk during World War II, remains as a perpetual reminder of the site's naval heritage.