The Pentagon has banned all V-22 Osprey convertibles from flying after a crash of one of the machines that killed 8 U.S. Army soldiers, according to the Pentagon’s press service. “The U.S. Air Force, Navy, and Marine Corps, in coordination with the department’s V-22 Joint Program Office, announced an operational stand-down for all Osprey variants in the wake of the November 29 CV-22 mishap off the coast of Japan,” the Pentagon press service said. It is reported that this step is being taken out of an abundance of caution while an investigation into the causes of the accident is underway. If th…