Facility 1 at NASA's Kennedy Space Center in Florida workers monitor a replica shuttle.

In Orbiter Processing Facility-1 at NASA’s Kennedy Space Center in Florida, workers monitor a replica shuttle main engine (RSME) as it moves toward the engine well of space shuttle Discovery under the guidance of a Hyster forklift, a specially designed engine installer.

The RSME is one of three being installed on Discovery during Space Shuttle Program transition and retirement activities. The replicas are built in the Pratt & Whitney Rocketdyne engine shop at Kennedy to replace the shuttle engines which will be placed in storage to support NASA's Space Launch System, under development. Discovery is being prepared for display at the Smithsonian’s National Air and Space Museum Steven F. Udvar-Hazy Center in Chantilly, Va. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann