With the Pentagon’s announcement Monday that Army Gen. Ray Odierno is President Obama’s pick to lead U.S. Joint Forces Command, all eyes in the Corps turn to the man who has held that post since 2007: Gen. Jim Mattis. In case you missed it, Marine Corps Times asked Mattis in April whether he intended to retire once his hitch at JFCom is over in the fall. He wouldn’t bite, saying only that his next move would be decided by Obama and DoD’s senior leadership. It’s widely speculated that Mattis is on the short list of candidates to become the Corps’…