There's been a lot of talk about who Barack Obama will choose to become his next Secretary of State. It may be a good idea for him to concentrate on his Secretary of Defense, too. Obama has talked about bipartisanship a great deal during the campaign, so this is his chance to demonstrate it.
Robert Gates has been a non-partisan, steady hand at the Pentagon since the resignation of Donald Rumsfeld. He has overseen the surge strategy that is decimating al Qaeda in Iraq and has been a very pragmatic secretary.
There are other candidates for the job, to be sure. However, it is up to Obama to blend both competency and bipartisanship. If Gates or someone similar is not named, then Obama's campaign promises are nil.