On Launch Pad 39B participate in a flight crew evacuation drill referred to as the Mode II/IV Simulation.

On Launch Pad 39B at NASA's Kennedy Space Center, a group of NASA and contractor workers from Kennedy Space Center and other NASA centers, along with the Department of Defense, participate in a flight crew evacuation drill, also referred to as the Mode II/IV Simulation. During the exercise, an emergency condition during launch countdown was simulated and participants did their parts to perform an emergency egress of the flight and ground crew, in this case from the 195-foot level of the fixed service structure. With the simulated emergency in play, Fire Rescue and Closeout Crew workers aided in the extraction and rescue of the crew. Photo credit: NASA/Kim Shiflett