Different suspension system. Preparation for the first Shuttle flight. The boosters.

3 — ACCESS WAY 4 — Engle and Truly September 23, 1977, Free Flight 5 — CRASH/FIRE/RESCUE 6 — MAIN COMBUSTION CHAMBER NOZZLE ASSEMBLY ignition source for the Space Shuttle mission, deep-space and Earth-orbital free-flying payloads, the one influence.