It's a very valid fear. There were a lot of those made during the cold war, and not all have been accounted for. They surely make convenient things to steal and sell for quite a bit of profit; they could be anywhere.
LOL@pissy pikey; I highly doubt he'd be pissy for long - the Venetian is his favorite hotel in the world and there's always some greenage around to put him in a better mood!
Perhaps the warning doesn't extend beyond the 1st and our friends will actually be safe. I refuse to even think about the alternative.