Mossad should drive by this address with a remote control, just to be sure. If the house goes BOOM, you'll have your answer.
I would have called the FBI by now to at least make them aware of the out-of-place character of these 'residents' except for one thing, and this is the rub: a three-foot, prominently lit, statue of the Virgin Mary in the garden out front!
Keyword alert! Besides, it may look like a Virgin Mary to you, but to them, she's just the neighborhood Fatima.
Like this fat imma?