The U.S. military must maintain a balanced fleet of short- and long-range strike aircraft to give it the flexibility to undertake a variety of missions, the commander-in-chief of U.S. forces fighting in Afghanistan told members of the Senate Armed Services Committee today. "In my own mind, I do not have a vision of precisely what that mix should be," U.S. Central Command chief Gen. Tommy Franks said during a hearing on Operation Enduring Freedom. "I will say that I do...