| A nuclear weapon |
| A cabinet dept. |
| Weird Al" Yankovic single about a nuclear holocaust during the holidays, which contains the line "...underneath the missile-toe |
| Police dept. alerts |
| Early nuclear reactor |
| Acronym for nuclear power producers |
| Nuclear agcy. until 1974 |
| U.S. dept. with a bolt on its seal |
| Dept. that oversees Los Alamos National Laboratory |
| Cabinet dept. concerned with farming |
| Dept. of Justice bigwigs |
| Paper from the Returns Dept. |
| U.S. dept. concerned with nuclear reactors |
| Dept. of the Interior org. that employs forest firefighters |
| Nuclear family? |
| Accounting dept. employee, perhaps |
| Dept. of homeland security |
| Marshall Islands nuclear test site |
| Now Dept. of Health, Education and Welfare. |
| Cabinet dept. with a lightning bolt on its seal |
| Dept. phone no. |
| Farming-focused cabinet dept. |
| Cabinet dept. since 1889 |
| Nuclear fission co-discoverer Otto |
| Cataclysmic nuclear explosion |
| Nuclear-reaction process |
| '50s nuclear experiments |
| Cabinet dept. since '65 |
| Nuclear theorist Niels |
| Nuclear experiments, for short |