Artist-supplied caption:
In my design, the fleet of orbiters flies in formation around the earth one last time toward the setting sun. Leading the way is Enterprise in silver, again blazing a path for the rest of the program. Behind it, I pay tribute to our fallen friends of Challenger and Columbia in gold, each ringed with a wreath of 7 stars. Finally, the three active space shuttles (Discovery, Atlantis, Endeavor), complete with foam-clad external tanks and Solid Rocket Boosters, break their earthly bonds and soar into the heavens.