Even though Fallout 76 takes place in a world where the bombs have already dropped, the game is littered with silos full of more nukes for players to launch themselves. Finding the codes to do so is supposed to be complicated, but players have not only already launched nukes, theyve found ways to streamline the process as well.
Source: N4G PC Players Have Already Found A Ways To Cheat Fallout 76's Nuke Codes