The Lockheed P-2 Neptune (originally designated P2V until September 1962) was a Maritime patrol and ASW aircraft. It was developed for the United States Navy by Lockheed to replace the Lockheed PV-1 Ventura and PV-2 Harpoon, and being replaced in turn with the Lockheed P-3 Orion. Designed as a land-based aircraft, the Neptune never made a carrier landing, although a small number of aircraft were converted for carrier use and successfully launched. The type was successful in export and saw service with several armed forces.
The P2V-7 model, the type acquired and now operated by the Mid-Atlantic Air Museum, was first flown in 1954. Re-designated SP-2H, OP-2E, and AP-2H after 1962, "Neptune"s continued to serve through the Viet Nam war and until the mid 1970's. By that time, however, the P3 "Orion" had replaced the P2 in all service but with reserve units. Most found their way to Davis Monthan Air Force Base, in Arizona, where they were placed in storage.