CBS News May 10, 2017, 6:50 AM
Inside the U.S. Navy's newest, fastest submarines
Russia announced plans last month to build a submarine larger than its typhoon class, which is already the world's biggest nuclear-powered submarine.
The United States is also deploying a new generation of submarines, the Virginia class.
http://www.cbsnews.com/news/us-navy-newest-submarine-squad-virginia-class/
