MINEOLA, N.Y. (AP) — One of the busiest, most stressful travel days of the year posed special challenges in the crowded Washington-to-Boston corridor as travelers on their way to Thanksgiving celebrations contended with a nor'easter packing rain and snow. NJ Transit executive director Veronique Haim said Wednesday is the commuter mass transit agency's busiest travel day of the year. Major airlines dropped their ticket-change fees for people flying in and out of the Northeast, allowing passengers to try to sneak on an earlier flight, though that appeared to be a challenging proposition since most planes were filled.