(Editor's Note: This story has been updated to reflect comments made during Boeing's quarterly earnings call.) Boeing reported today that its KC-46 tanker program saw a $402 million pre-tax charge in the final quarter of 2021, according to a breakdown of the company's Q4 results. The latest charge to a program that has reported billions of dollars in out-of-pocket costs “is primarily driven by evolving customer requirements for a remote vision system, as well as factory and supply chain...