I have a question for all the frequent flyers. Why when I take a bag to do a search, do some people ask me if their bag alarmed? The x-ray does not alarm anything. Its all up to the operator to decide if the bag needs to be hand searched. One guy told me that his bag alarms every time. And why do alot of pregnant woman not want to go throught the WTMD? I asked one and she said that the doctor told her not to have herself exposed to x-rays. X-rays? Its a metal detector. I will pat them down as everyone has that option. But alot of people seem to be confused as to what our epuipment does.