(Editor's Note: This story has been updated to more accurately reflect Boeing's interest in building large, autonomous tankers. The company, which is currently on contract to build MQ-25 Stingrays for the Navy, follows aircraft capability requirements provided by the various services.) ST. LOUIS -- Even as the Air Force has signaled some support to eventually field unmanned tanker systems, plane-maker Boeing will be looking at "principally crewed concepts" until the service explicitly says it wants autonomous refueling platforms, Sean...
