Don't press the big red button
A bonus photo from the Intrepid Museum - this is the (formerly Top Secret) missile control room from the submarine USS Growler.
The Growler was armed with four Regulus nuclear-tipped cruise missiles, each of which could unleash two megatons of messy fission-powered death on any target within 900km of the submarine. And this was where the missiles would be controlled from. Rather scary.