paranoia or legitimate concern?

York city centre today was absolutely hoaching with visitors of all shapes and sizes.

However I didn't see any enemy paratroopers, or hostile tanks threatening the security of the city.

Perhaps these two blokes have inside info....
And maybe we should all take to the shelters...

One of them turned round and saw me snapping them. He gave me a hard stare, so I guessed it was time to foxtrot-oscar.

You really do need to view this LARGE

(I've just noticed that I've sneaked into the pic, so I guess this is also a SP)