An interceptor missile failed to fire in a missile defense test last month because a support arm in the silo did not clear when it was supposed to, a senior Pentagon official said Wednesday. Air Force Lieutenant General Henry Obering, director of the Missile Defense Agency, said the program to field a system capable of intercepting long-range ballistic missiles was going through "a period of disappointment." "The hard things about missile defense we are accomplishing. The easy things is what we are having trouble with, like arms moving out of the way," he told reporters. The interceptor missile has now...
