Legalman 2nd Class Mathew Estes recalibrates a firemain station aboard the aircraft carrier USS George H.W. Bush (CVN77). GHWB is executing its third Material Assist Visit in preparation for a Navy Board of Inspection and Survey (INSURV) inspection. GHWB provides the national command authority flexible, tailorable war fighting capability through the carrier strike group that maintains maritime stability and security in order to ensure access, deter aggression and defend U.S., allied and partner interests. (U.S. Navy photo by Mass Communication Specialist Seaman Apprentice Samuel Wagner)