The Defense Department is delaying production of a new smart bomb designed for its premier fighters, bombers and drones because testing has uncovered problems that must be investigated and fixed, according to program officials. Raytheon's Small Diameter Bomb II, which is designed to arm an array of Air Force and Navy aircraft, including the F-35 Joint Strike Fighter, had been slated for a low-rate initial production decision in January. But the decision -- milestone C in Pentagon parlance -- will...