Boeing said Thursday it would recognize a $393 million after-tax charge on the KC-46 tanker program, reflecting "higher costs associated with previously announced program schedule and technical challenges." The charge marks the fourth one Boeing has taken on the program. Earlier this year, the company announced a $156 million after-tax charge "to maintain schedule with concurrency between late-stage development testing and the transition to initial production." In 2015, it reported an after-tax charge of $536 million related to higher engineering...