ABC News recently got exclusive access to the USS Florida, a modern nuclear submarine in the US Navy, they give a full tour of the vessel and show operations throughout the ship. Hundreds of people quietly travel beneath the waves in what is a city in a capsule. The submarine itself has enough power to keep going for decades. It also desalinates its own water to make itself even more sustainable. The submarine is apart of the nuclear triad which is the system by which the US military can launch nuclear weapons and defend against them. The USS Florida has an important mission and is an important part of America’s military arsenal.

Take a look inside in this great video with David Muir: