 In his monograph Project Apollo : The Tough Decisions , Deputy Administrator Seamans wrote that NASA 's single worst mistake in engineering judgment was not to run a fire test on the Command Module before the plugs @-@ out test . In the first episode of the 2009 BBC documentary series NASA : Triumph and Tragedy , Jim McDivitt said that NASA had no idea how a 100 % oxygen atmosphere would influence burning . Similar remarks by other astronauts were expressed in the 2007 documentary film In the Shadow of the Moon . 
