Without wanting to get into a "gosh what a big bomb, I'll get my stepladder" post, There was a palletised jobby they used to roll out the back of a C130 to make instant V large LZs in the Vietnam jungle- nothing above calf/knee level and big enough for a lot of hueys to land in- video (open) exists somewhere of this thing going off, quite spectacular.
Concur about the FAEs- think the Film "Outbreak" features one. It was compared to a small Nuke in explosive power.
All a bit scary if you ask me...