Nuclear Weapons Testing in Garry's Mod

*IMPORTANT* The sound is weird at the beginning as apparently the siren soundtrack is similar to a song, and the owner of said song decided to have the video banned worldwide with it in so I had it removed. Testing out the Gbombs addon for Garry&Mod on gm_bigcity, which can be found at this link: The link below that I originally used for this mod appears to no longer be available, however this mod appears to be either a reupload, or an extremely similar version, as the objects appear to be mostly the same: For this to work completely, you also need to download the materials pack: This is the original link that appears to no longer work: