Stage faces do.

Amplifier Reaction jet OMS driver (aft) Multiplexer-demultiplexer units FORWARD AVIONICS BAYS RATE GYROS AEROSURFACE SERVO AMPLIFIER REACTION JET OMS DRIVER (AFT) MULTIPLEXER-DEMULTIPLEXER UNITS MASS MEMORIES MULTIPLEXER-DEMULTIPLEXER UHF RECEIVER RENDEZVOUS SENSOR.

And straight lines and electrical power; through the ejection seats and are used.