“Houston, Tranquillity Base here. The Eagle has landed.”
Suddenly, Buzz and Neil heard the high-pitched sound of the Master Alarm. On the computer display the “PROG” light glowed amber. “Program alarm,” Armstrong radioed. Quickly, Aldrin queried the computer for the alarm code, and “1202” flashed on the display.
“During blackout every team member does his own soul searching, reviewing the decisions and the data, knowing they had to be nearly perfect and knowing how tough perfection is.” Gene Kranz
To Kranz and his team, this crew was special. They just could not lose them. Failure was not an option.
As If there were not enough problems, Houston still had not completed the command module power up checklist.
Lovell’s disappointment with Kranz’s decision to not run another star check was quickly becoming academic since the time to conduct it was running out anyway.
Lovell toggled the “master arm” switch to On and glanced around to see if everything else was in order. Guidance control was set to “Primary Guidance”; thrust control was on “Auto”; engine gimbals were enabled; the propellant quantity, temperature, and pressure looked good; the ship was maintaining the correct attitude.
Kraft wanted to fire the descent engine now, get the ship back on its free-return slingshot course, and when it emerged from behind the moon and reached the PC+2 point, execute any maneuvers that might be required to refine the trajectory or increase its speed.