The U.S. military said Wednesday it has temporarily grounded its entire fleet of Osprey aircraft after finding that last week's deadly crash off the coast of southwestern Japan during a routine exercise may have been due to a malfunction.The decision to ground all Ospreys deployed worldwide by the Air Force, Navy and Marine Corps came after the Japanese government repeatedly asked the United States to suspend flights of the aircraft in Japan amid renewed concerns over their safety.The stand-down is intended "to mitigate risk while the investigation continues" into the Nov. 29 accident, the …READ FULL ARTICLE