The U.S. military is looking into an incident on Saturday in which it lost communications with 50 long-range nuclear-armed missiles based in the northern United States. The U.S. Air Force's new Global Strike Command lost communications with the missiles for about 45 minutes, and says it immediately dispatched troops to inspect the sites. The check determined there was no damage and no evidence of sabotage. A spokesman for the command says investigators believe a faulty circuit board at a control center was to blame. The spokesman, Lieutenant Colonel John Thomas, says experts found that the same type of part failed...