Last Space Shuttle Rocket Boosters Delivered to NASA

The last set of space shuttle rocket segments arrived in Florida Thursday after one final train ride from their Utah-based factory. The rocket pieces were delivered to the Kennedy Space Center in Florida from Promontory, Utah, where they were refurbished by NASA contractor Alliant Techsystems (ATK). The 149-foot (45-meter) boosters are actually reserve rockets that would only be used to launch a rescue mission if NASA's final scheduled shuttle flight on Endeavour runs into an emergency. More

(Source: Space.com - May 29)