SECURITY LINES CRISIS.

TOM LLAMAS (ABC NEWS) (Off-camera) Now to new concerns about terrorism, of course, the reason we endure those TSA screenings at America's airports. Some airports even warning passengers to arrive three hours ahead of time. And tonight a first look at one of the ways the TSA is trying to cut wait times. One senator saying today it would could them in half. Here's ABC's David Kerley. [ABSTRACT FROM PUBLISHER]