I have no doubt that this will be militarily very effective, but I wonder what kind of safeguards they have in place to keep the bad guys from getting their hands on one, in such a way as to use it?

I’d like to think that at some point these weapons will have security measures, such as temporary codes (good for, say, an hour), to prevent them from being used by the terrorists. I don’t know whether it’s practical or not, but as our weaponry continues to advance, so will theirs if they can get access to it.