NORTHAMPTON — Authorities say two people who were on a motorcycle are dead and another person is facing charges after a collision in Easthampton.The motorcycle was heading north on Route 5 at about 3:30 p.m. Thursday when a southbound vehicle crossed into to its lane.The operator and the passenger on the motorcycle were killed.The driver of the other vehicle, identified by the Northwestern district attorney's office as 45-year-old James Walter Ainsworth, of Springfield, was taken to the hospital with injuries not considered life threatening.