 Two prison officials testified in response that inmates could hide contraband in half-inch beards, that an escaped prisoner with a beard could change his appearance by shaving his beard, and that it would be difficult to consistently measure half-inch beards.The magistrate ultimately deferred to the judgment of the prison officials, relying on Eighth Circuit precedent, and recommended that Holt's motion be denied.The District Court adopted the magistrate's recommendations, and the Eighth Circuit affirmed.