In the final minutes of Apollo 11’s descent to the lunar surface, five 1201 and 1202 alarms blared in the lunar module. The computer was overloaded with data, and for a brief moment it looked like Neil Armstrong and Buzz Aldrin wouldn’t land on the Moon. As we know, they did; Apollo 11 got a GO to land in spite of the alarms. What we don’t know is the man whose work allowed the crew reboot the computer and save the landing: Hal Laning.