Because the Space Shuttle occasionally has to use alternate landing places, NASA uses two heavily modified 747 aircraft to ferry them around the world. Check out how they mate the shuttle to the Shuttle Carrier Aircraft below.

Click "next" to scroll through the steps involved in dropping the giant space shuttle on the even larger cargo jet. Humorously, the technicians painted a note stating "Attach Orbiter Here" with the sarcastic note: "Black Side Down."