lifting two of the cars that derailed outside the concord bart station and put them back on the tracks. crews on the scene all day getting them back in service. the track has been tied up since two cars derailed about 9:20 a.m. this morning as the training was pulling out of the station. >> just started shaking back and forth. moving around. and it almost felt like we were going over stuff. and one of the ladies that was sitting next to me was like, i don't think we should be moving right now and she started getting up and that's when we started panicking. >> reporter: causing significant track damage and engineers are trying to decide if work in the area played a role. >> this is the first train to start single tracking and when it was crossing over to go into the single tracking mode that's when the slow speed derailment happened. >> reporter: about 65 passengers were on the train who went to the hospital with back injuries. police officers happened to be on the platform at the time...