The U-2 spy plane is an engineering marvel, but it can't land on its own. This is the complicated process pilots have to go through to bring the plane down safely. Follow Tech Insider: On Facebook ...

One, the U-2 lands upon a bicycle-style landing gear. Two, the U-2’s 105-foot wingspan generates so much lift, and floats so well in ground-effect, that a full stall is required to land ...