In most airports I haven't really needed it, but having it when going through security at any of the NYC airports during busy hours can make a HUGE difference.

In most airports I haven't really needed it, but having it when going through security at any of the NYC airports during busy hours can make a HUGE difference. I was flying JFK->Charleston last month, and the regular security line had hundreds of people in it. The pre-check line was literally empty, and I got right through security in about 2 minutes.