180317-N-ME396-1408 GROTON, Conn. (March 17 2018) The crew of the Virginia-class attack submarine USS Colorado (SSN 788) mans their newly-commissioned boat. Colorado is the U.S. Navy's 15th Virginia-class attack submarine and the fourth U.S. Navy ship named for the state of Colorado. (U.S. Navy photo by Mass Communication Specialist 3rd Class Tristan B. Lotz/Released)