Center City, Philadelphia ---- 20-year-old Dewayne Taylor says after he left his job as a lab technician at the University of Pennsylvania, he got on the SEPTA North Broad Street Line to head home. He fell asleep listening to his iPod. Instead of waking up from a nightmare, Taylor says he awoke to one: A man punching him; first with his fists -- then the attacker pulled out a hammer. Taylor says all throughout the attack the man kept chanting something. Taylor got off the train at Erie Avenue. A woman passenger on the train walked him to Temple Hospital.