not everything caught on camera is dramatic, sad, frightening, or heroic. some things are just plain weird. like what if you were walking through new york's grand central station, and in the blink of an eye, nearly everyone around you suddenly froze in place? >> they stopped what they were doing and just stood like frozen. >> they're not moving. i can't move my cart. >> that's exactly what happens here on february 24th, 2007. grand central comes to a very strange and screeching halt. >> this is so weird. >> what is going on? >> i don't either. >> were you here from the beginning? >> no. >> do you know what they're doing? >> no. >> opened in 1871, grand central is the largest train station in the world. every day more than half a million people rush through the main concourse, a cavernous