In the nearly eight years since Northrop Grumman inked a contract to design the Air Force's new nuclear bomber, lawmakers and Defense Department officials have touted it as an example of acquisition done right amid years of cost overruns and schedule delays in other programs. House Armed Services Committee Ranking Member Adam Smith (D-CA), a longtime critic of the F-35 program -- going so far as to call it a "rat hole" -- has praised the B-21 effort. “The stats...