US tanker Pennsylvania Sun burning after being torpedoed by German submarine U-571 in the Gulf of Mexico, 15 Jul 1942The USS Enterprise conducted flight training when steaming from Hawaii to Tonga on 15 Jul 1942. Here an F6F Hellcat fighter crashed into the sea when approaching the carrier for a landing; pilot rescued.Commissioning ceremony of USS Sunfish, Mare Island Naval Shipyard, Vallejo, California, United States, 15 Jul 1942; note submarine Tunny alongside