Citing a series of unanticipated disruptions to the Greyhound bus service, a red-faced and breathless Sen. John McCain (R-AZ) arrived 50 minutes after the start of the Republican presidential debates Sunday. According to the beleaguered candidate, a series of departure delays, missed transfers, and a flat tire outside Oxford, OH forced him to arrive at the outskirts of Iowa's capital five minutes before the debate was about to begin. 'To the esteemed people of Des Moines, the ABC viewers at home, and moderator George Stephanopoulos, I'm sorry I'm late,' McCain said as he assumed his position behind his assigned podium and fastened his lavalier microphone to his lapel. 'I would've called, but I was out of minutes on my prepaid cell phone.' As the broadcast ended, McCain sprinted backstage to relieve himself and fill his suit pockets with complimentary bottled water and the contents of a cheese platter. 