The movies were right: Gremlins are real. Or at least they will be if DARPA -- the U.S. Defense Advanced Research Projects Agency -- has anything to say about it. As we learned this week from our friends at the Navy Times , DARPA is moving ahead on its effort to create a fleet of flying aircraft carriers, which it calls the "Gremlins" program, with demonstration flights scheduled to begin sometime next year. What are Gremlins? We've been watching this particular hush-hush DARPA project for more than two years now . In a nutshell, it calls for the creation of...