I'm JFK based, and I can say from my experience in the BA terminal they harass every one equally.
No Flight Attendent I know of wears an underwire bra anymore because they will get felt up to insure a weapon/knife/pick isn't hidden in the bra.
Just remember, interfering with a flight crew in the conduct of their duties is a federal offense, and all screening areas are videotaped.
Me, myself and I am just waiting for some do-good TSA guy to accuse me of having alcohol on my breath. Some of the things that New York City is not lacking is a shortage of Good Jewish Lawyers.