This four DVD set includes: Battle of the X-Planes NOVA climbs into cockpits to fly the most revolutionary planes and examines the high-stakes battle waged between Boeing and Lockheed Martin to build the most capable and versatile fighter ever created -- the Joint Strike Fighter. Youre on the front line as the two aerospace giants fight for a contract that will make aviation history and help protect America, and that could provide the winner total domination of the U.S. defense fighter industry. Battle of the X-Planes reveals the breakthrough designs, heartbreaking setbacks, adrenaline-fueled test flights, and one final nail-biting decision -- the winner of the most lucrative contract in military history. Spies that Fly From flying spies the size of a CD player to fully armed pilotless jets that roam halfway around the world, get a close look at the revolutionary unmanned aerial vehicles (UAVs) from the past 50 years, including the Lightning Bug, Pioneer and Predator, an odd-looking plane already credited with helping destroy nearly 750 enemy targets. Follow military specialists, scientists, and engineers as they examine some of the innovative vehicles currently under development. Top Gun over Moscow For half a century we feared them. Now, for the first time, meet the rugged pilots of the Russian Air Force -- and take a close-up look at the heart-stopping maneuvers that fill Western flyers with awe. Join aviation author Jeff Ethell as he tests out the powerful Su-27 and gets goaded into pulling a hair-raising stunt. Find out why, despite baffling differences in approach, Western aces still see these fearless flyers as a formidable force. B-29: Frozen in Time Travel on a perilous mission to repair and fly the Kee Bird, a rare, legendary B-29 bomber stranded on a Greenland icecap for almost 50 years. NOVA follows a team of adventurers as they struggle to bring the frozen warbird back to life. Meet bold pilot Darryl Greenamyer and his team as they embark on two expeditions to revive Kee Bird and make it fly again.