and tonight we know why the fire was so intense. reporter: authorities explain it s because there was more than 1,000 gallons of fuel on the blane when it skidded off the runway. so much that some of it seeped into the stream directly behind me. they re out mitigating this right now. i can tell you that the smell of fuel is still very, very strong. tom? steve, thank you. next to the nationwide chaos after the failure of u.s. customs computers at airports across the country. the images still coming in. arriving passengers standing in long lines at new york s jfk. the terminal packed with people at dulles airport in washington. scenes like these in dallas, l.a., san francisco, and other airports as well. abc s senior transportation correspondent david kerley is at reagan airport in the capital. reporter: long lines at airports around the country on a friday evening. the airport is wild, it s just nuts. reporter: the customs service apparently suffering a computer