Winter 2021

John “Mike” Callahan

John “Mike” Callahan is the author of “The Complexities of Qualified Immunity” and “Jettisoning the Lethal Force Gold Standard,” published in Police Chief, the official publication of the International Association of Chiefs of Police. A retired FBI supervisory special agent and chief division counsel, he  continues to do law enforcement training and write books, most recently Supervisory and Municipal Liability in Law Enforcement.

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