Taking viewers inside a factory that rarely allows cameras inside, Mega Factories: Apache Helicopters showcases one of the deadliest weapons in the U.S. military's arsenal, the Apache attack helicopter In only five weeks, workers must ensure that each Apache is strong enough to survive enemy fire and is agile and fast enough to serve as a stealth attack weapon. Amazingly, these massive, 8-ton helicopters are put together almost entirely by hand using hand tools and not robotic assembly lines.From start to finish, watch as these stealthy attack helicopters are made battle-ready