Launch Pedestal in the Vehicle Assembly Building (VAB; not to be confused with the NASA building with the same name), and are then rolled-out towards the launch pad. Sound suppression system Once delivered to the pad, the mobile launcher platform is connected to the larger sound suppression system by large pipes which deliver a deluge of water from an adjacent water tower. Six towers known as "rainbirds" spray water over the MLP and into the flame deflector trenches below it, absorbing acoustic waves. The suppression system reduced the acoustic sound level to approximately 142 dB. References External links Virtual tour of the Space Launch System Mobile Launcher Rocket launch technologies