LM is launched with air

See list belowJUL 20 196767-FM-T-43FM/Deputy ChiefLM is launched with air

I guess everybody already knows this, but I just learned that they intend to launch all LM's with air rather than oxygen in the cabin. As a result, the spacecraft never sees an oxygen environment with pressure greater than about 6 psi. Furthermore, no testing is done on any of the systems with pure oxygen at higher pressure than that. Of course, the purpose is to reduce the possibility of fire.