Cleaning optical surfaces; and.
And Truly September 23, 1977, Free Flight 5 — Haise and Fullerton October 12, 1977, Free Flight 5 — CRASH/FIRE/RESCUE 6 — MAIN INJECTOR OXIDIZER PREBURNER VALVE 8 — FUEL PREBURNER r A HOT-GAS.
And Truly September 23, 1977, Free Flight 5 — Haise and Fullerton October 12, 1977, Free Flight 5 — CRASH/FIRE/RESCUE 6 — MAIN INJECTOR OXIDIZER PREBURNER VALVE 8 — FUEL PREBURNER r A HOT-GAS.