The fate of one of outgoing Defense Secretary Ash Carter's signature initiatives -- the Defense Innovation Unit Experimental -- is unclear as President-elect Donald Trump looks to hand former Marine Corps General James Mattis the keys to the Pentagon early next year. Michèle Flournoy, the CEO of the Center for a New American Security who was reportedly on Hillary Clinton's shortlist for defense secretary, likened DIUx to a baby that might be "thrown out with the bathwater" amid the flurry...