Endeavour's farewell tour

Technicians prepare to change the transporter system for the Space Shuttle Endeavour as it travels on its final journey to its permanent museum home, October 12, 2012 in Los Angeles, California. Over the next two days, the 170,000-pound shuttle will travel at 2 mph along a 12-mile route from LAX to its final home at the California Science Center.

Credit: ROBYN BECK/AFP/Getty Images