Shocking photos show what happened when a dozen tractor-trailers skidded out of control on snow-covered Interstate 80 in Pennsylvania during Wednesday night’s winter storm — killing one person and injuring a number of others. The 66-vehicle pileup, including 55 trucks and 11 passenger vehicles, over a mile span on the westbound side of the highway happened around 3 p.m. Wednesday in Clinton County, State Police said Thursday.