on Search crews make an important discovery in the hunt for Columbia debris, locating the nose cone in Texas. news_spaceshuttle_columbia_launchcrew_0201_rts.jpg home Disaster Clues superpass.gif http://abcnews.go.com/sections/us/videofiles/Video/030204shuttle_video.ram 10441109988280 ABCNEWS - Launch Damage lock_icon.gif superpass.gif http://premium.cnn.com/pr/video/meta/us/2003/02/04/mo.shuttle.probe2.affl.r1.smil 10441109988281 CNN - Fuel Tank Debris lock_icon.gif lock_icon.gif big_headline