Kansas lawmakers have asked Defense Secretary Chuck Hagel to countermand the Air Force's decision to build a fleet of light-attack aircraft for the Afghan military while a contract for that work is under protest. In a March 15 letter issued the same day the Air Force gave contractor Sierra Nevada and its partner, Brazilian company Embraer, the green light to begin assembling 20 planes for Afghanistan, Kansas Sens. Pat Roberts (R) and Jerry Moran (R), as well as Rep. Mike...