Does it really matter? I think the main point is that this shouldn't be happening in the first place. Unless the TSA considers a woman's breasts to be dangerous weapons...

What's next? Will I have to endure some TSA goon groping my crotch some day? How about anal cavity searches-- people could surely hide a weapon there. I can tell you that the first TSA agent who sticks his (or her) hand on my genitals is in for a big surprise... perhaps a knee to the jaw or a fist in the face, coupled with a loud scream of "rape!" will catch their attention. (I'd do it too... You have to admit that it would be kind of funny for a guy at a checkpoint to be screaming rape...)

Where does the line get drawn? I think that any reasonable person would agree that touching a person's private parts, or areas around those private parts, is over the line. No matter how you spin it, this is unacceptable. There is no need for this to be done in the name of "security", especially when there are so many other potentially effective measures that are being overlooked.