I know that was dress rehearsal before apollo 11, i heard that Apollo 10 Lunar Module the LM4 "Snoopy' was deliberately under fueled to make sure astronauts not attempt unsanctioned lunar landing, but this a bit lame, it was like when US government forced Von Braun to put sand bags on his Jupiter C rocket to make sure he not make unsanctioned satellite launch with result that Soviets go there first
I wonder why NASA not attempted Lunar Landing at first possibility and does "Snoopy' was deliberately under fueled?