Lined up on the horizon are Space Shuttle Atlantis the structures of Launch Pad 39A, Launch Pad 39B and the tower of Pad 39A.

Lined up on the horizon are Space Shuttle Atlantis, the rotating and fixed service structures of Launch Pad 39A, Launch Pad 39B, and the 300-gallon water tower of Pad 39A. The shuttle has spent six hours rolling out to Pad 39A, leaving the Vehicle Assembly Building at 8:19 a.m. The body of water in the foreground is the Banana River. The mission payload aboard Space Shuttle Atlantis is the S3/S4 integrated truss structure, along with a third set of solar arrays and batteries. The crew of six astronauts will install the truss to continue assembly of the International Space Station. Launch is targeted for March 15. Photo credit: NASA/Ken Thornsley