I agree that Canterbury has "done the time" for his crime. My only concern would be whether he really knows enough to be running a survival school. Regardless of his official qualifications I'd say he knows more than I do, and there are undoubtedly things I could learn from him.

That said if I could go to any single survival school it would probably be the one Cody runs in AZ.
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“I'd rather have questions that cannot be answered than answers that can't be questioned.” —Richard Feynman