It takes a lot to fuck up a nuclear power plant, though. It's not like you can sneak in and push the "meltdown" button.
Terrorists would have a lot more luck with dirty bombs than trying to recreate a Fukushima earthquake and tsunami.
Forget Muslims. We should be rounding up all the engineers:
The Chronicle of Higher Education
Does Engineering Education Breed Terrorists?
http://chronicle.com/article/Does-Engineering-Education/235800
A long but a good read.