The U.S. Air Force test program for its Minuteman III ICBMs has been interrupted by a "mechanical problem" that will delay the next test seven months. The missile, selected at random from those stored in Midwest silos, was brought to Vandenberg Air Force Base in California, placed in a silo there, and readied for firing into the Pacific. But during the installation of the missile in the silo, a problem was encountered. The air force won't say what exactly the problems is, or if it is something common to other Minuteman missiles. This kind of testing is not as realistic...