About John

I am John B. McCallum IV, the owner and Lead Investigator for McCallum and Associates. I retired as a Supervisory Deputy U.S. Marshal in October 2014 after 28 years of service.

I have a B.A. in Criminal Justice / Political Science and have attended many advanced courses in interviewing and surveillance techniques.

During my career in the U.S. Marshals Service, I served on two National Call-Out Teams, Shooting Review Board and the Critical Incident Response Team. I am certified by the International Critical Incident Stress Foundation in both individual and group crisis intervention.

I served for three years as Deputy in Charge of Operation Terror Stop in New York City. This consisted of the Terrorist Trials of the first 1993 bombing of the World Trade Center and two protection details of Federal Judges and prosecutors.

I was the Acting Chief during the 911 attacks and a first responder to the scene. I have been the case agent in many federal, state and local criminal cases, having presented evidence to the grand jury and testifying in court.

Any of my other Investigators working with McCallum and Associates are former Law Enforcement officers, whom have served at the federal, state or local level.

“With our experience, please let us serve your private investigative needs”.