A large crawler crane travels up the ramp toward Launch Pad 39B.

A large crawler crane travels up the ramp toward Launch Pad 39B. At the top can be seen a mobile launcher platform with the rotating and fixed service structures at left. The current 80-foot lightning mast can be seen atop the fixed structure. The crane with its 70-foot boom will be used to construct a new lightning protection system for the Constellation Program and Ares/Orion launches. Pad B will be the site of the first Ares vehicle launch, including Ares I-X which is scheduled for April 2009. Photo credit: NASA/Kim Shiflett