At 83 hours mission elapsed time, the long lunar coast was almost over. It was time for the lunar orbit insertion burn. This burn would put Yankee Clipper and Intrepid into lunar orbit.
It was impossible to check out the entire spacecraft; that could only be done on the ground. In the short time available, Grifﬁn’s team ran a pre-maneuver check list, re-aligned the CSM platform, and discussed proceeding with the mission with the crew.
John Aaron’s (EECOM) next call made him a legend in Mission Control. He said quickly and conﬁdently, “Flight, try S-C-E to Aux.”
It was 68 degrees, overcast, and raining at Cape Kennedy on November 14, 1969. The ceiling was 2,100 feet and the winds were light. There was some discussion, while the astronauts were suiting-up, of scrubbing the launch, but that would mean ramping this whole thing down, draining every drop of fuel out of the Saturn, and sitting on their hands for a twenty-eight-day hold.