CAYCE, S.C. (AP) — An Amtrak passenger train slammed into a parked freight train in the early-morning darkness Sunday after a thrown switch sent it hurtling down a side track, authorities said. Two Amtrak crew members were killed, and more than 100 people were injured. It was the third deadly wreck involving Amtrak in less than two months. The Silver Star, en route from New York to Miami with nearly 150 people aboard, was going an estimated 59 mph when it struck the empty CSX train around 2:45 a.m., Gov.