150302-N-KD168-050 -GULF OF ADEN - Quartermaster Seaman Anthony Hughes, a Bethel Park, Pa., native, uses an azimuth circle to calibrate bearings aboard amphibious assault ship USS Iwo Jima. Iwo Jima is the flagship for the Amphibious Ready Group and, with the embarked 24th Marine Expeditionary Unit, provides a versatile sea-based, expeditionary force that can be tailored to a variety of missions in the U.S. 5th Fleet area of operations.