On Board Britain's Nuclear Submarine Trident torrent

Cameras are granted access to one of the UK's nuclear missile submarines at sea, as Rob Bell spends five days and nights living on board the HMS Vengeance. With unprecedented access, he explores the sonar room, torpedo bay, and nuclear missile tubes loaded with deadly warheads, and later finds himself in real danger along with the rest of the crew when a fault in the engine room turns into a potentially serious incident