Find out why the Virginia-class fast-attack sub has been called the "most modern submarine in the world"

Only seven countries in the entire world deploy nuclear weapons at sea, an exclusive and deadly club.

The Ohio class is a class of nuclear-powered submarines currently used by the United States Navy. The navy has 18 Ohio-class submarines: 14 ballistic missile submarines (SSBN) and four that were later converted to guided missile submarines (SSGN).