In the book, which will be released next week, Cheney reveals that he kept a secret resignation letter locked away in a safe to be hauled out in case his health failed and he became incapacitated.

He said he prepared the letter for a couple reasons. “One was my own health situation,” he told NBC’s Jamie Gangel in an interview that will air on Aug. 29, the night before publication of “In My Time: A Personal and Political Memoir.” “The possibility that I might have a heart attack or a stroke that would be incapacitating. And there is no mechanism for getting rid of a vice president who can’t function.’’

Cheney stood staunchly by his decision to use enhanced interrogation techniques, including waterboarding. “I would strongly support using it again if we had a high value detainee and that was the only way we could get him to talk,’’ he said.

In the interview, Gangel told the former vice president: “This book is gonna make a lot of people angry.”

Say what?

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