Terrorist photographers?

There is a great article written by Bruce Schneier for the UK Guardian. 

http://www.guardian.co.uk/technology/2008/jun/05/news.terrorism?gusrc=rss&feed=worldnews

“Photographers have been harassed, questioned, detained, arrested or worse, and declared to be unwelcome.  We’ve been repeatedly told to watch out for photographers, especially suspicious ones. Clearly any terrorist is going to first photograph his target, so vigilance is required.”