After his college football career, Greg Campion became a decorated law enforcement officer for cracking large-scale drug rings and apprehending high-valued suspects. But on Thursday, with some of his old colleagues looking on, the disgraced former federal agent stood before a judge and begged for mercy. "I have made a terrible mistake," said Campion, 38, his hands clasped behind his back. "I will offer no excuse to you, whatsoever."