USS Montana, the US Navy’s newest attack submarine, successfully completed its initial sea trials, operating off the Virginia coast last week.The sea trials included submerging for the first time. The sub also conducted high-speed maneuvers while on the surface and submerged.Newport News Shipbuilding personnel will continue the testing program.Jason Ward, Newport News Shipbuilding vice president of Virginia-class submarine construction,“Taking the ship to sea for the first time is a huge milestone for everyone involved … the ship was successfully brought to life”He added the performance of Montana and its crew was exceptional.In this video Defense Updates analyzes how potent is the USS Montana Block 4 Virginia class submarine?