and jack garman new that's what the alarm was. so he gave the okay to land, you are go. to the bosses in mission control and, said armstrong and aldrin go to land, don't worry about the alarm. and then jack garman could hear the alarm from the lunar module go off again and again every three seconds, every 30 or 40 seconds. it was a computer recording the same thing and jack garman didn't wait to be asked, he shouted into his headset same type of alarm,go to land . and so on and 59 seconds after the last alarm, we have that famous exchange that we're all familiar with. houston, tranquility base here. eagle has landed. from houston, roger, tranquility base. you've got a lot of guys about to turn blue. we are breathing again, thank you. and most of us didn't know why they were blue or why they had resumed breathing. because if you listen to the transcript, you don't actually have a sense of how urgent the situation was that they were going through. the apollo flights computer actually say that first lunar landing. it was the size of a small briefcase . and even in 1969, ver