Nuke briefcase

Nuke briefcases are a miscellaneous item in the Fallout 76 add-on Nuclear Winter.

Characteristics
Nuke briefcases are pre-War devices used to launch nukes in the Nuclear Winter battle royale gamemode. Four nuclear launch codes are required before launching a nuke with the briefcase.

Picking up a nuke briefcase broadcasts a server-wide message indicating the player who picked it up. Using the item consumes all four nuclear launch codes and the briefcase itself.

Once activated, the player character is able to select the location of the nuclear strike. A server-wide message is then broadcasted, giving player characters 20 seconds to vacate the area. For the duration of the countdown, the player who launched the nuke is visible on the map. Anyone caught within the blast radius is instantly killed.

Compared to the base game's nuclear silo launches, the blast radius of Nuclear Winter nukes are greatly reduced.

The Briefcase Detector perk can be used to make finding briefcases easier.

Locations
Nuclear briefcases are only found in the Nuclear Winter battle royale mode. They can be found randomly scattered throughout the map. More than one briefcase may appear per match.