170713-N-NJ910-0130 ATLANTIC OCEAN (July 13, 2017) Aviation Ordnanceman 3rd Class Cassandra Black Horn fires a .50-caliber machine gun on the starboard gallery deck of the amphibious assault ship USS Iwo Jima (LHD 7) during a live-fire exercise. Iwo Jima is underway with Amphibious Squadron (PHIBRON) FOUR and the 26th MEU conducting PHIBRON-MEU Integrated Training in preparation for their upcoming deployment. (U.S. Navy photo by Mass Communication Specialist Seaman Dary M. Patten/Released)