People of faith often develop doubts and uncertainty.
People who don't worry me.
It is unlikely anyone will come up with a DSM IV type laundry list documenting a likely terrorist.
I read a book on profiling a number of years ago...Oh man! I fit a number of thier profiles!
Just a word of warning, don't set me off! :-)
I had a lightbulb moment reading the article.
Bloom, The Lucifer Principle is a fascinating analysis of science and history that relates to this question.