You get to the airport and—ugh!—there’s a long line waiting to go through security. You feel your panic meter kicking in, especially if you’re already running late. But here you are, so what can you do to get through the security checkpoint as quickly as possible? Which Transportation Security Administration (TSA) line do you choose?It turns out there’s a science to why certain lines move quicker than others—and fortunately, you can make some ke…