ATLANTIC OCEAN (Dec. 6, 2016) – Petty Officer 2nd Class Xavier Lemus-Rivera conducts repair parts petty officer training in the stock control office aboard amphibious assault ship USS Iwo Jima (LHD 7). Iwo Jima is underway pursuing Mobility-Engineering (MOB-E) and Mobility-Seaman (MOB-S) certifications as part of the ship’s pre-deployment qualification process. (U.S. Navy photo by Petty Officer 3rd Class Jess E. Toner/Released)