170810-N-XG464-002 NORFOLK (Aug. 10, 2017) Secretary of the Navy (SECNAV) Richard V. Spencer takes a tour aboard the Virginia-class attack submarine USS John Warner (SSN 785). Spencer visited John Warner during a one-day trip to Norfolk to hear directly from Sailors and military leaders. (U.S. Navy photo by Mass Communication Specialist 2nd Class Jonathan B. Trejo/Released)