We have caught them in downtown Houston taking pictures of exit doors; etc.
You know - I was in Houston a few weeks back and I witnessed something very strange. Two middle eastern men and a woman, all in western clothing, photographing each other in front of a metro train stop, on the trai itself, of an approaching train, the terminal stop, and finally at the doors of the co-cathedral of the sacred heart.
At the time i was wondering why they would photograph themselves in front of such banal settings. Now I think I know.
Hmmmm...