A view of the boattail conditioning and water quench system hookup (the silver
pipe from the deck of the launch pad to the bottom of the rocket).
The boattail conditioning and water quench system provided conditioned gaseous
nitrogen or water to the engine compartment. The GN2 was used
to provide a temperature-controlled atmosphere in the boattail area. In the
event of a fire or any malfunction causing engine shutdown, a cold
GN2 or, if necessary, a water quench would have been supplied to
the boattail area.