An aerial view of Launch Pad 39A at NASA Kennedy Space Center in Florida.

An aerial view of Launch Pad 39A at NASA Kennedy Space Center in Florida. In the background is the Vehicle Assembly Building. Atop the fixed service structure is the 80-foot-tall lightning mast. At right is the 290-foot-tall water tower that holds 300,000 gallons of water used at launch for sound suppression to protect the orbiter and its payloads from damage by acoustical energy and rocket exhaust reflected from the flame trench and Mobile Launcher Platform during launch.