USN 710724

Anti-Submarine Demonstration during the inter-American Naval conference, 1-3 June 1960. An HS-1 Seabat helicopter uses its sonar while S2F and P2V patrol planes fly over USS DARTER (SS-576), USS CALCATERRA (DER-390), and USS HAZELWOOD (DD-531). The demonstration was witnessed by Naval leaders of 10 American nations. USN 710724