Pentagon acquisition chief Bill LaPlante said the Defense Department would "love" to have a special category of money with spending flexibility to quickly counter attacks from unmanned drones, especially since U.S. adversaries change their tactics nearly every two weeks. But he also said he knows congressional appropriators think his wish for "agility" sounds a lot like a "slush fund." LaPlante, speaking Thursday at a RAND Corp. event in Arlington, VA, alongside members of the congressional Planning, Programming, Budget and Execution...