correspondent richard angle is on the ground in afghanistan for us tonight. >> tens of thousands of afghans swarmed into kabul airport. desperate to weave at any price. they burst through security. climbed over walls, and spilled on to the tarmac. searching for any airplane that would take them far away from afghanistan, away from the taliban. >> so many managed to cram into one plane, the pilot refused to take off. people on board refused to disembark. but it was a cross of barb wire divide, where it turned really ugly. on the military side of the airport, american troops trying to evacuate u.s. embassies, staff found themselves overwhelmed, suddenly battling crowds, firing warning shots, this was not the mission they came for. the pentagon says u.s. troops shot dead to armed afghans. but still the crowds did not