Antisubmarine Squadron (VS) 33 "World Famous Screwbirds" replaced their S-2 Trackers by the S-3A Viking, like all VS-squadrons within the US Navy. These transitions marked the end of the propeller era and greatly improved the Carrier Battle Groups' Anti-submarine warfare capabilities. VS-33 took delivery of the first S-3As in 1975. In 1993 the designation of the squadron changed into Sea Control Squadron (VS) 33, the abbrivation remained the same. Carrier Air Wing (CVW) 9 commanded the squadron in 1987 - when this picture was made - when the wing was assigned to the USS Nimitz (CVN-68).