good evening. since the wright brothers first flight, we have competed with birds for space in the sky. they were there first, and from time to time, they remind us of that. occasionally with dire consequences. over just the past 24 hours, three jet aircraft have been hit. in the first instance, tragedy was avoided at new york s jfk when the jet was able to circle around back. but now we have learned air force two carrying the vice president and another jet carrying secretary of state clinton have also been hit. all of them in the past 24 hours. nbc s pete williams is with us tonight with this still developing story. pete, good evening. brian, it happened to secretary clinton s plane while she was flying from brusseling to parririparis, the air force it safety, but sometimes birds can cripple a 90,000 pounds aircraft. riveting video captures how it sounds and looks when it s bird versus machine. an engine failure, the right engine. declaring an emergency due to a bird st