Keywords: SP-2H Neptunes of VP-31 parked in airfield c1968.jpeg U S Navy Lockheed SP-2H Neptunes of Patrol Squadron VP-31 VP-31 Detachmet North Island provided crew training for P-2 crews at Naval Air Station North Island California USA until 1970 http //collections naval aviation museum/emuwebdoncoms/pages/doncoms/AdvQuery php U S Navy National Museum of Naval Aviation photo No http //collections naval aviation museum/emuwebdoncoms/pages/doncoms/Display php irn 39723 QueryPage 2Femuwebdoncoms 2Fpages 2Fdoncoms 2FAdvQuery php 2011 089 048 ca 1968 U S Navy PD-USGov-Military-Navy Lockheed P-2 Neptune Patrol Squadron 31 United States Navy |