Spectators look to the sky with cameras and other devices as the space shuttle Endeavour flies over prior to landing Friday, Sept. 21, 2012, at Los Angeles International Airport. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Beginning Oct. 30, the shuttle will be on display in the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, embarking on its new mission to commemorate past achievements in space and educate and inspire future generations of explorers.Photo Credit: (NASA/Paul E. Alers)

Space shuttle Endeavour, mounted atop a NASA 747 Shuttle Carrier Aircraft (SCA) performs a low flyby past the tower at Los Angeles International Airport, Friday, Sept. 21, 2012. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Beginning Oct. 30, the shuttle will be on display in the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, embarking on its new mission to commemorate past achievements in space and educate and inspire future generations of explorers.Photo Credit: (NASA/Bill Ingalls)

The space shuttle Endeavour, atop the Shuttle Carrier Aircraft, or SCA, performs a fly-by of Los Angeles International Airport on Tuesday, Sept. 21, 2012 in Los Angeles where it will be placed on public display at the California Science Center. Today's flight marks the final scheduled ferry flight of the Space Shuttle Program. Photo Credit: (NASA/Joel Kowsky)

Space shuttle Endeavour, mounted atop a NASA 747 Shuttle Carrier Aircraft (SCA) lands at Los Angeles International Airport, Friday, Sept. 21, 2012. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Beginning Oct. 30, the shuttle will be on display in the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, embarking on its new mission to commemorate past achievements in space and educate and inspire future generations of explorers.Photo Credit: (NASA/Bill Ingalls)

Space shuttle Endeavour, mounted atop a NASA 747 Shuttle Carrier Aircraft (SCA) performs a flyby of the Theme Building at Los Angeles International Airport, Friday, Sept. 21, 2012. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Beginning Oct. 30, the shuttle will be on display in the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, embarking on its new mission to commemorate past achievements in space and educate and inspire future generations of explorers.Photo Credit: (NASA/Scott Andrews)

A U.S. Flag is flown out of the top of the Suttle Carrier Aircaft (SCA) as it taxis with space shuttle Endeavour atop Friday, Sept. 21, 2012, at Los Angeles International Airport. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Beginning Oct. 30, the shuttle will be on display in the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, embarking on its new mission to commemorate past achievements in space and educate and inspire future generations of explorers.Photo Credit: (NASA/Paul E. Alers)

NASA Deputy Administrator Lori Garver, right, holds her hand to her heart during the playing of the National Anthem at the welcoming ceremony for space shuttle Endeavour, Friday, Sept. 21, 2012, at Los Angeles International Airport. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Beginning Oct. 30, the shuttle will be on display in the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, embarking on its new mission to commemorate past achievements in space and educate and inspire future generations of explorers.Photo Credit: (NASA/Paul E. Alers)

Space shuttle Endeavour, mounted atop a NASA 747 Shuttle Carrier Aircraft (SCA) lands at Los Angeles International Airport, Friday, Sept. 21, 2012. The shadow of a NASA F-18 chase jet wing is shown in the foreground. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Beginning Oct. 30, the shuttle will be on display in the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, embarking on its new mission to commemorate past achievements in space and educate and inspire future generations of explorers.Photo Credit: (NASA/Bill Ingalls)

The space shuttle Endeavour, atop the Shuttle Carrier Aircraft, or SCA, lands at Los Angeles International Airport on Tuesday, Sept. 21, 2012 in Los Angeles where it will be placed on public display at the California Science Center. Today's flight marks the final scheduled ferry flight of the Space Shuttle Program. Photo Credit: (NASA/Matt Hedges)

Space shuttle Endeavour, mounted atop a NASA 747 Shuttle Carrier Aircraft (SCA) performs a low flyby at Los Angeles International Airport, Friday, Sept. 21, 2012. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Beginning Oct. 30, the shuttle will be on display in the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, embarking on its new mission to commemorate past achievements in space and educate and inspire future generations of explorers.Photo Credit: (NASA/Bill Ingalls)