Well, that's not a stunning surprise to anyone here. The problem is quickly connecting them to any terrorist organization or something which will justify detaining them longer than if they caught you taking a picture of a refinery.
Dang it, we know the problem is arab terrorists, but we've hamstrung ourselves to the point where we treat them equally with elderly Americans. AAAARGH!
Well we are talking about Philadelphia - perhaps they can accuse them of taking pictures without having first hired a UNION photographer and/or a UNION driver to take them to the site of the refinery......THEN we'd have something to charge them with.......... ;^)