>> chris, the work out here started just before day break. cranes were brought in to do some heavy lifting and you can see what they're doing behind me right now. after they picked up the locomotive and put it on the track they started moving each of the seven passenger cars that derailed. they will pick up each and put them on the track in an effort to reconstruct the accident scene. they'll try to figure out what caused the train to crash. overnight the names of all four passengers killed by the metro north commuter train crash sunday were released. police identified 54-year-old donna smith. >> donna was a wonderful person. she was kind, neighborly, friendly. >> reporter: 35-year-old ahn kisook, 59-year-old james ferrari and this man, 58-year-old father of four james lovell. >> i'll remember him as having dignity and determination and being, you know, a wonderful father. >> reporter: three of them ejected from the train, its cars