US Navy (USN) Sailors from the USN Virginia Class New Attack Submarine Pre-Commissioning Unit (PCU) TEXAS (SSN 775) prepare to dock at the Northrop Grumman Newport News shipyard in Virginia (VA) after their boat successful completion of alpha sea trials in the Atlantic Ocean. TEXAS is the second Virginia Class submarine and the first major USN combatant vessel class designed with the post-Cold War security environment in mind