A Grumman S-2A Tracker (Bu 136658) of anti-submarine squadron VS-29 Tromboners. VS-29 was assigned to Anti-Submarine Carrier Air Group 53 (CVSG-53) aboard the aircraft carrier USS Kearsarge (CVS-33) and flew the S-2A from 1960 to 1963. Note that both the MAD-boom and the radar are extended. This plane was later sold and converted to a fire-fighting plane.
[Source: U.S. Navy]
The Grumman S-2 Tracker (previously S2F prior to 1962) was the first purpose-built, single airframe anti-submarine warfare (ASW) aircraft to enter service with the US Navy. The Tracker was of conventional design with twin engines, a high wing and tricycle undercarriage. The type was exported to a number of navies around the world. Introduced in 1952 the Tracker saw service in the USN until the mid-1970s with a few aircraft remaining in service with other air arms into the 21st century.