At 2:28 pm on August 28, 2003, a middle-aged pizza deliveryman named Brian Wells walked into a PNC Bank in Erie, Pennsylvania. He had a short cane in his right hand and a strange bulge under the collar of his T-shirt. Wells, 46 and balding, passed the teller a note. “Gather employees with access codes to vault and work fast to fill bag with $250,000,” it said. “You have only 15 minutes.” Then he lifted his shirt to reveal a heavy, boxlike device dangling from his neck. According to the note, it was a bomb.