Keywords: Lockheed P2V-4 Neptune in flight 1950.JPG A U S Navy Lockheed P2V-4 Neptune in flight over San Francisco California USA in 1950 U S Navy Naval Aviation News June 1950 http //www history navy mil/nan/backissues/1950s/1950/Jun50 pdf cover 1950 USN PD-USGov-Military-Navy Lockheed P-2 Neptune Aerial photographs of San Francisco |