Discovery caught a piggy-back ride on NASA's 747 shuttle carrier aircraft from Barksdale Air Force Base, Louisiana to Kennedy Space Center, Florida in August 2005. Air Force Security Forces personnel set up a security perimeter. At 121 feet long and with 78 foot wingspans, space shuttles are less than half as long and about a third as wide as commercial 747s, which are 250 feet long and have 224 foot wingspans.
Credit: Department of Defense/Master Sgt. Michael A. Kaplan, U.S. Air Force