The 646th Aircraft Control Squadron was the operational USAF unit of Highlands Air Force Station

Highlands Air Force Station

Highlands Air Force Station was a Navesink Highlands military installation in Middletown Township near the borough of Highlands, New Jersey. The station provided ground-controlled interception radar coverage as part of the Lashup Radar Network and the Semi-Automatic Ground Environment network, as...

 and manned a flight at Texas Tower 4

Texas Tower 4

Texas Tower 4 is a former United States Air Force Texas Tower General Surveillance Radar station, located south-southwest off the coast of Long Island, New York in of water. The tower was the site of a tragic accident and was destroyed by a winter storm on January 15, 1961...

, a Highlands offshore radar annex from 1959 until it collapsed into the Atlantic Ocean in 1961, killing 28 people. The squadron was activated on 1 June 1948 and renamed the 646th Aircraft Control and Warning Squadron on 6 December 1949, then 646th Radar Squadron (SAGE) on 1 Oct 1958.