170613-N-TV230-037 PACIFIC OCEAN (June 13, 2017) Aviation Ordnanceman 3rd Class Alex Bergan mans a .50-caliber machine gun on the catwalk of the aircraft carrier USS Theodore Roosevelt (CVN 71). The ship is conducting a mid-cycle material assessment in preparation for Inspection and Survey. (U.S. Navy photo by Mass Communication Specialist 3rd Class Bill M. Sanders/Released)