

Unknown knowns Unknown known risks are very rare – these are the risks an organization is aware of but is disregarding them, either intentionally or unintentionally. We also know there are known unknowns that is to say we know there are some things we do not know. Rumsfeld stated: Reports that say that something hasn’t happened are always interesting to me, because as we know, there are known knowns there are things we know we know. Secretary (informal) The Honorable (formal) United States Department of Defense Office of the Secretary of Defense Incumbent Lloyd Austin since January 22, 2021 Who is the secretary of defense in the post? United States Secretary of Defense Robert Strange McNamara When was Rumsfeld Secretary of Defense? Donald Rumsfeldġ3th and 21st United States Secretary of Defense

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