A key Republican senator is urging Ashton Carter, the Obama administration's deputy defense secretary-nominee, to "step up" his defense of the Joint Strike Fighter, suggesting that Carter's role in recent Pentagon decisions to restructure the program demonstrates "a lack of commitment to the success" of the F-35. In a letter sent to Carter today, Sen. John Cornyn (R-TX) directly links the Senate's consideration of Carter's nomination for the Pentagon's No. 2 post to the lawmaker's concerns about the F-35, which...
