Perhaps the most significant point about the lunar-orbit flight proposed for Apollo 8 was that the command and service modules would fly the same route to the moon as would be used for the actual lunar landing.
An ‘A’ type mission would be flown with a Saturn V and be used to test the Launch vehicle, spacecraft, and a high velocity lunar return. Nasa cover the ‘A’ mission with Apollo 4 & 6.
A ‘B’ type mission would be flow with a Saturn IB and test the lunar module development, and propulsion, and launch vehicle staging. This was accomplished with Apollo 5.
A ‘C’ type mission would be flown with a Saturn IB and test the command and service module and evaluate the crew performance in low earth orbit. This was accomplished with Apollo 7…
When Deke Slayton and Stu Roosa arrived at pad 34 they saw ambulances waiting in vain at the base of the launch tower. They boarded the small elevator and rode to level A-8, 218 feet up, and headed across the swing arm to the clean room…
The “Plugs Out” test scheduled for Jan 27, 1967 was not the first time that spacecraft 12 had been put through a simulated run with people on board…
“On my honor I will do my best, To do my duty to God and my country and to obey the Scout Law; To help other people at all times; To keep myself physically strong, mentally awake, and morally straight.” The Boy Scout Oath.
“So the reason I took those symbols was that I think this was the most important thing I had going for me, and I felt that while I couldn’t take one for every religion in the country, I could take the three I was most familiar with.” Ed. White
While flight-preparation crews were having problems, Grissom, White, and Chaffee were finding bottlenecks in training activities. The chief problem was keeping the Apollo mission simulator current with changes being made in spacecraft 012.
Max Faget’s position was that considering the difficulty of the job, if each mission was successful half the time, it would be well worth the effort. But Gilruth thought that was too low. He want a 90% mission success ratio and a 99% ratio for Astronaut safety. Walt Williams who was currently running the Mercury program believed that astronaut safety needed to be limited to only 1 failure in a million which was 99.9999%.