Man, Boeing (NYSE:BA) just cannot catch a break. For a while there, 2015 was starting to look like the year Boeing defense got its wings back. In February, opining that "stealth may be overrated," U.S. Chief of Naval Operations Adm. Jon Greenert began laying the groundwork for the U.S. Navy breaking up with Lockheed Martin's F-35C fighter jet, and buying a bunch of Boeing F/A-18s for its carriers instead. Earlier this month, the Air Force floated a trial balloon of its own. In a controversial revelation, the Air Force suggested it was considering buying as many as six dozen cheaper...