Senior defense appropriator Rep. Jim Moran (D-Va.) wrote to the head of the Joint Strike Fighter program to question whether the most recent fleet grounding was another in a line of setbacks that may prevent the program from meeting its delivery schedule going forward. In a letter to Air Force Lt. Gen. Christopher Bogdan, Program Executive Officer for the F-35 Joint Strike Fighter, Moran asked for a brief on last month’s engine fire and subsequent fleet grounding. He noted recent…