Source Code

The bomber is Derek Frost, the guy whose wallet was returned to him as he left the train. He deliberately left his wallet there so it would be assumed that he died on board. Stevens figures this out and Frost is arrested before he can use his next bomb. Not content with the fact that everyone on the train died for nothing, Stevens convinces Goodwin to send him into the Source Code one last time and disconnect his life support after that. In the Source Code, Stevens deactivates the bomb and handcuffs Frost to a pole. He calls the cops on Frost and lets them know where the next bomb is. He then sends a text message to Goodwin. Stevens's life support is deactivated, but he continues to live on in the Source Code as he deboards the train with Cristina. Goodwin hears about an attempted bombing on a commuter train being thwarted just as she receives the text from Stevens. Sure enough, the text says that she will get the news. Goodwin remembers everything as she looks down on Stevens disfigured body. The text says that someday Stevens will be sent back into the Source Code for another mission.

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Factual error: Several uniform items on USAF Captain Colleen Goodwin are incorrect. She is missing several ribbons and then ones she does have are out of order. A USAF Capt would have a Basic Military Training ribbon and (probably) at least one Good Conduct ribbon and one Longevity ribbon. It is also unlikely that she has enough time in service to be wearing the Kuwait Liberation Medal ribbons. The ribbons she is wearing are out of order. The correct order is from top left: Air Medal, Joint Service Achievement Medal (JSAM), Organizational Excellence Award, Kuwait Liberation Medal (Saudi Arabia), Kuwait Liberation Medal (Emerate of Kuwait). (In the movie, Capt Goodwin is wearing from top left: Org Excellence, Air Medal, JSAM, KLM-SA, KLM-Kuwait). The blue name tag is not worn on the USAF service coat. It should be nickel plated with a matte finish.

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Trivia: Derek Frost has 2 totally different driver's licenses. All personal data is different.

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Question: What happened to the real Sean Fentress?

Answer: He died in the train bombing along with all the other passengers. If you're asking what happened to the real Sean Fentress in the alternate time line created at the end of the movie, Colter took over his body and continued to live the life that Fentress had been living.

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