HOUSTON (AP)_There's a problem at the airport in Houston. Mayor Bill White says most of the airport's federal Transportation Security Administration personnel didn't show up for work today.Those are the security people, including the ones that screen passengers. White says the loss of those essential workers means delays for travelers of possibly four or five hours. In the meantime, he's trying to get state and federal help for the unprecedented use of the area's freeways as parts of the city evacuate before the arrival of Hurricane Rita. One of the problems on the roads is people running out of gas. However, White says people shouldn't use the transportation problems as an excuse not to evacuate. Copyright 2005 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.