Chief of Naval Operations Adm. Jonathan Greenert told a gathering Thursday that a couple unsuccessful attempts to land the unmanned X-47Bs on an aircraft carrier this month should not dampen enthusiasm for the concept. The Navy made history on July 10 when an X-47B landed twice on the USS George H.W. Bush (CVN-77), the first time an unmanned aerial vehicle touched down on a carrier deck, snagged the arresting wire and came to a stop. A third attempt that day…
