I could have told you that -- the article lists several good reasons, but one of the big ones they missed is the
shoe carnival. I flew before they implemented the carnival and afterwards (and thank God I found a job locally this week so no more TSA for me) and the security wait doubled. Those Stupid A....
http://www.post-gazette.com/pg/05175/527796.stm
Monday-morning waits are long at airports around the country as business flyers get back on the road, but the wait at Pittsburgh International Airport is longer than those at even the busiest airports in the country.