a police helicopter shot by urban snipers videoing the scramble to avoid the crash landing and up close and personal with the cops hunting down the gunman. hello, everyone. i'm don lemon. the news begins right now. frightening new images of a tornado that tore through st. louis. shot by some people in the car who got way too close for comfort. >> oh, my god. >> it hit that transformer just to the right. the tornado is right in front of us. >> oh, my god. dude, another one. dude, another one! >> power lines! >> i don't know if we should go any further. >> i'm stopping, dude. there are power lines down. >> oh, my god. we can't get passed. we can't get passed. >> hello? >> do you want to back up a little bit? >> dude, there's a [ bleep ]!