Lockheed SP-2H Neptune. Upon landing at the U.S. Naval Air Station, Norfolk, Virginia, a crewman directs the pilot of an SP-2H Neptune Patrol Aircraft after a flight from its last operational home, Patrol Squadron 23 (VP-23), at the U.S. Naval Air Station, Brunswick, Maine. With this flight, the active life of the Neptunes came to an end after a quarter century of service, 20 February 1970.