At given intervals throughout.

33 13 — MSBLS ELEVATION STATION RUNWAY 33 13 — MSBLS AZIMUTH/DISTANCE MEASURING EQUIPMENT STATION RUNWAY 15 12 — MSBLS ELEVATION STATION RUNWAY 15 12 — MSBLS ELEVATION STATION RUNWAY 15 14 — MSBLS AZIMUTH/DISTANCE MEASURING EQUIPMENT STATION RUNWAY 15 12 — HIGH-PRESSURE OXIDIZER TURBOPUMP 13 - MAIN OXIDIZER VALVE.