Keywords: View of a US Navy anti-submarine warfare demonstration in June 1960.jpg View of a U S Navy anti-submarine warfare demonstration during the inter-American Naval conference 1-3 June 1960 An Sikorsky HSS-1 Seabat from Helicopter Anti-Submarine Squadron 1 HS-1 uses its sonar while Grumman S2F-1 Tracker and Lockheed P2V-7 Neptune patrol planes fly over the submarine USS Darter SS-576 the radar picket destroyer escort USS Calcaterra DER-390 and the destroyer USS Hazelwood DD-531 The demonstration was witnessed by Naval leaders of 10 American nations <br> Two of the Trackers and the three Neptunes were assigned to Air Test and Development Squadron 1 VX-1 tailcode JA The other four Trackers were from Anti-Submarine Squadron 30 VS-30 Note that Hazelwood has a at that time still experimental Gyrodyne DSN DASH drone on her flight deck Official U S Navy photo http //www history navy mil/our-collections/photography/numerical-list-of-images/nhhc-series/nh-series/USN-710000/USN-710724 html USN 710724 from the U S Navy http //www history navy mil Naval History and Heritage Command U S Navy PD-USGov-Military-Navy USS Hazelwood DD-531 USS Calcaterra DE-390 USS Darter SS-576 Grumman S-2 Tracker United States Navy Lockheed P-2 Neptune Sikorsky H-34 United States Navy Sea Control Squadron 30 United States Navy Helicopter Anti-Submarine Squadron 1 United States Navy Air Test and Evaluation Squadron 1 United States Navy |