In Season 8, before Dr. Benton departs County General, his final farewell is to Carter. As a going-away present, Carter hands Benton a train token; it is the same one Benton had given him shortly after he started in the ER. Carter was left exhausted and distraught after a shift where the ER had handled a mass casualty, and when he admitted the night had devastated him Benton simply gave him the token and said that if he was serious about being a good doctor, he would use it to come back to work the next day. Carter did return for his scheduled shift but kept that token as a reminder of what the job entailed.