00000000
By Well, this story dramatically enhances my faith in the United States Air Force:
McNamara wanted this [ICBM unlock code] system installed and wanted the unlock codes provided in the launch order, and the commander of SAC Thomas Power disagreed and went to the mat over it. McNamara thought he had prevailed, but learned from me in 2004 (the date of my article that you wrongly dated 1994) that SAC had set the combination codes to eight zeros and got away with it until 1977. Meanwhile, comparable technical coded switch devices were installed on strategic bombers in the early 1970s (the codes to which would be provided in the launch order), and in Trident submarines in 1997 (the codes to open a safe inside a safe containing the fire control key would also be provided in the launch order). One can surmise that an effort has been made to universalize these codes or otherwise the launch order would be pretty heavily loaded with unlock codes.
Or, if you prefer: