180111-N-JE719-770 ATLANTIC OCEAN (Jan. 11, 2018) Lt. Gregory stands Officer of the Deck while underway aboard the Pre-Commissioning Unit Colorado (SSN 788). Colorado is the 15th Virginia-class attack submarine and is scheduled to be commissioned March 17, 2018. (U.S. Navy photo by Mass Communication Specialist 1st Class Jeffrey M. Richardson/Released)