Messing with Time

Congress, in its infinite opposition to progress, has inserted an extra four weeks of daylight savings time into the Energy Bill. This will allow kiddies back east an extra hour of trick or treat on all hallow's eve, but will cost the airline industry $150 million. I would like to know a) where does the airlines industry get such an estimate and b) why kids can't trick or treat at the same time no matter what the clocks say. Meanwhile - as the wars (terror, drugs, iraq, etc) on life continue, congress remains focused on irrelevance.