John F. Reintzell is a graduate of the University of Maryland at College Park, Maryland, and the FBI National Academy at Quantico, Virginia. He retired after thirty years with the ...voir plusJohn F. Reintzell is a graduate of the University of Maryland at College Park, Maryland, and the FBI National Academy at Quantico, Virginia. He retired after thirty years with the Baltimore Police Department, where he served as the director of the Education and Training Division. Following retirement, he began a second career as a trainer and consultant for law enforcement agencies. He has trained over ten thousand law enforcement members during his training career.voir moins