AUTOMATIC FIRE U.S. Navy Petty Officer 1st Class Lee Harstad fires a .50-caliber automatic machine gun during Talisman Saber 2013 in the Coral Sea, July 17, 2013. The biennial training exercise aims to improve Australian and U.S. combat readiness and interoperability. Harstad is assigned to the guided-missile cruiser USS Antietam. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 676249-B-SMV16-514.jpg Photo Gallery