The Defense Department does not -- as this time -- require a program to develop space-based ballistic missile interceptors to shoot down enemy long-range rockets during the boost phase of ascent, according to the top U.S. military commander for missile defense and space operations. Gen. John Hyten, head of U.S. Strategic Command, told the Senate Armed Services strategic forces subcommittee March 20 that he believes DOD should focus on developing and fielding a space-based sensor network as a way to...