COLORADO SPRINGS, CO -- The head of U.S. Strategic Command said this week he would like to see the Defense Department work more aggressively to develop and test conventional hypersonic weapons. Gen. John Hyten told reporters April 17 at the National Space Symposium here that rather than pause testing after failures -- which DOD has done in the past -- he would like to see the department continue to move forward and learn from its mistakes. "From my perspective, I...