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who writes mysteries involving Navajo lore invariably portrays the FBI as clueless and incompetent at best. He often dubs it The Federal Bureau of Ineptitude, which I have assumed is common nomenclature for the organization in the southwest.
Evidently FBI ineptitude is not confined to the Navajo Reservation, but, hey, they're great at bureaucratic infighting and bamboozling Congress. [Admittedly the last is not difficult.]