Frank Kendall, the Pentagon's top weapons buyer, waded into a controversial issue Tuesday when he addressed a Senate proposal that would strengthen the role of the military service chiefs in the Defense Department's acquisition system. "I don't think we need any legislative changes to do that," he told reporters after a speech in Tysons Corner, VA. "I just think we need to do some things internally to strengthen the relationship." Kendall said he is hoping for more communication with Senate...