Chris Kraft revealed in his 2001 autobiography that a meeting occurred between Gilruth, Slayton, Low, and himself to make sure Aldrin would not be the first to walk on the Moon.
kɹˈɪs kɹˈæft ɹᵻvˈiːld ɪn hɪz tˈuː θˈaʊzənd wˈʌn ˌɔːɾoʊbaɪˈɑːɡɹəfi ðˌæɾə mˈiːɾɪŋ əkˈɜːd bᵻtwˌiːn ɡˈɪlɹuːθ, slˈeɪtən, lˈoʊ, ænd hɪmsˈɛlf tə mˌeɪk ʃˈʊɹ ˈɔːldɹɪn wʊd nˌɑːt biː ðə fˈɜːst tə wˈɔːk ɔnðə mˈuːn.