A Luzerne County man was jailed Wednesday on charges of assaulting a Secret Service agent - punching him with a set of brass knuckles and smacking him in the head with a chunk of asphalt - in what city police described as a road rage incident. William Slavoski, 52, resident agent in charge of the Scranton Secret Service office, suffered injuries to his face, head and left arm in the incident Tuesday evening on the Central Scranton Expressway, police said. Police charged his alleged assailant, Kenneth Kile, 25, of 64 Penn St., Kingston, with aggravated and simple assault, recklessly endangering...