180623-N-HI707-0004 ATLANTIC OCEAN (June 23, 2018) Lt. j.g. Leslie Liang performs normal diesel operation checks, verifying pressure, temperature and the operational status of the diesel engines aboard the Virginia-class fast attack submarine Pre-Commissioning Unit (PCU) Indiana (SSN 789). Indiana is the 16th Virginia-class fast attack submarine and is scheduled to be commissioned Sept. 29, 2018. (U.S. Navy photo by Chief Mass Communication Specialst Darryl Wood/Released)