Earlier this year the Defense Department refuted charges that it spent $43 million building a single gas station in Afghanistan, but now an influential senator alleges DOD "opened a real can of worms" while defending itself and is demanding additional information. Senate Judiciary Committee Chairman Chuck Grassley (R-IA) has sent a letter to Defense Secretary Ash Carter listing his remaining concerns about the cost of a compressed natural gas station in Afghanistan financed by DOD's now-defunct Task Force for Business...