Johnstown, Pa. -- A man who plays the role of Puckhead, the unofficial mascot of the Johnstown Chiefs hockey team, was burned when his fake beard and jersey ignited during a fire-breathing stunt that went awry. John Robertson, who has played the role for several years, was entertaining the crowd before the start of a game Friday night against the Reading Royals when he was injured, Chiefs general manager Toby O'Brien said. According to witnesses, Robertson poured the flammable liquid into his mouth and tried to light it, but it didn't work. When he tried a second time, Robertson's fake...