Nuke . . . ?

A lot of bunker maps in GMod say “nuke-proof” or “not nuke-proof”.

How do I get a nuke??

You know, typing the word “nuke” in the search bar at garrysmod.org would help…

you don’t need to search actually, its on the front page.
but here is Nuke Pack 4: http://www.garrysmod.org/downloads/?a=view&id=40859

Thanks.