I think this movie is about a guy who is really good at tacking down people, and I thin they need his help because of an impending terrorist attack or something like that. I believe the movie trailer I remember seeing said something about only having a day or so to find and kill the bad guys. I original thought the main actor was either Harrison Ford or Kevin Costner, but now I am fairly sure that's not correct. It's an action movie that I think was released within the last year or less. It's not "3 Days to Kill", and it is not "Jack Ryan".

Cleanskin? (http://www.imdb.com/title/tt1598873/reference)

Cleanskin? (http://www.imdb.com/title/tt1598873/reference)

No, it's not Cleanskin, but after seeing the trailer I just might have to watch it also.

Kind of a long shot, but what about Source Code?
Source Code (2011) - IMDb (http://www.imdb.com/title/tt0945513/)

Unfortunately, it is not Source Code. Actually, that movie wasn't too bad.