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Mike Callahan

The Objectively Reasonable Officer

John Michael Callahan served in law enforcement for 44 years. His career began as a special agent with NCIS. He became an FBI agent and served in the FBI for 30 years, retiring in the position of supervisory special agent/chief division counsel. He taught criminal law/procedure at the FBI Academy. After the FBI, he served as a Massachusetts Deputy Inspector General and is currently a deputy sheriff for Plymouth County, Massachusetts. He is the author of two published books on deadly force and an upcoming book on supervisory and municipal liability in law enforcement.

Contact Mike Callahan.

LATEST ARTICLES
Law Enforcement Policies
When supervision of criminal informants goes south
Failure to manage confidential criminal informants can lead to personal and municipal civil liability, and even criminal prosecution of officers
September 24, 2019 05:32 PM
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Mike Callahan
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Officer Misconduct / Internal Affairs
Failure to train, supervise and discipline LEOs: The Third Circuit speaks
Case demonstrates what happens when police supervisors display indifference to their responsibility to train, supervise and discipline subordinate officers
August 12, 2019 02:10 PM
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Mike Callahan
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Legal
Tenth Circuit: Officers can be constitutionally liable for creating the need to use lethal force
Some federal circuit courts appear ready and willing to rule against officers and their municipalities when deadly force is used quickly in matters involving mentally ill subjects
July 17, 2019 11:50 PM
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Mike Callahan
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Legal
The consequences of false statements and deliberate omissions in warrant affidavits
Recruit and in-service training on ethical police practice must emphasize the many pitfalls of such conduct
June 06, 2019 02:35 PM
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Mike Callahan
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Eighth Circuit ruling: Multiple TASER use justified to stop violently resisting suspect
After a man who viciously attacked his girlfriend died following a violent struggle with three officers, an excessive force lawsuit is brought against the officers
January 16, 2019 02:39 PM
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Mike Callahan
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Officer-Involved Shootings
Eighth circuit: Officer justified in shooting of unarmed suspect in Missouri
The court’s ruling recognizes the life-threatening dynamics involved in split-second confrontations between police and aggressive suspects
November 26, 2018 11:52 AM
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Mike Callahan
Legal
First Circuit vindicates response to suicide call that turned to a deadly threat for police
In a case arising from the fatal shooting by a state trooper of an armed civilian threatening suicide, the First Circuit affirmed the trooper was entitled to qualified immunity
October 24, 2018 03:59 PM
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Mike Callahan
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Anti-police rap ruling a victory for Pittsburgh cops
Pennsylvania Supreme Court affirms conviction for witness intimidation and terroristic threats against police officers contained in a YouTube video
September 24, 2018 11:49 AM
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Mike Callahan
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Officer-Involved Shootings
Eighth circuit rules in favor of Iowa cop in excessive force case
The court ruled that an officer’s use of deadly force was objectively reasonable because of the threat of death presented by an unarmed man
August 20, 2018 03:04 PM
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Mike Callahan
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Why communities will suffer without ‘stop and frisk’
While the ACLU continues to attack police use of “stop and frisk,” history shows that aggressive and focused policing substantially reduces crime
July 23, 2018 03:45 PM
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Mike Callahan
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