Executive Fellows

Dean M. Esserman is the former Chief of the New Haven (CT) Police Department. Prior to that, he served as Chief of Police in Providence, Rhode Island; Stamford, Connecticut; and the New York State MTA-Metro North Police Department. From 1987-1991, he served as the general counsel to Chief William Bratton of the New York City…

Anthony W. Geraci is a 24-year veteran of New York state law enforcement, beginning his career in 1998 with the New York City, New York, Police Department (NYPD). In 2003, he joined the city of Albany, New York, Police Department where he served in a variety of capacities and leadership roles. Anthony retired from the…

Deanna Cantrell is recognized as a leading driver of public safety leadership, operational efficiency and improvement, innovative and evidence-based problem solving, and advancing trust and community building. She has a proven record for exceptional communication, talented public speaking, forward-thinking police reform, strategic planning, and staff development. Chief Cantrell retired as the chief of police for…

Stuart Greer is the Assistant Commissioner of Strategic Initiatives & Program Evaluation at the New York City Department of Correction. Working within the Commissioner’s Office, Stuart reports to the Deputy Commissioner of Management, Analysis & Planning and is responsible for leading initiatives designed to strengthen reform efforts and increase organizational impact. These efforts include overseeing…

Joshua Young is the Deputy Commissioner of the New York City, New York, Department of Correction. Deputy Commissioner Young oversees the Office of Management Analysis and Planning where he is responsible for operational procedures, agency-wide policies, and in-depth analysis, reporting, and dissemination of statistics related to the agency’s goals and objectives. Deputy Commissioner Young serves…

David Waltemeyer is a 31-year law enforcement professional currently serving as the deputy chief of the Melbourne, Florida, Police Department. During Deputy Chief Waltemeyer’s law enforcement career he has served in state, local, and municipal law enforcement agencies. He has served as a patrol officer, criminal investigator, media relations coordinator, and all levels of supervision….

Pat Walsh started his career as a deputy with the Los Angeles County, California, Sheriff’s Department.  After seven years he began working for the Portland, Oregon, Police Bureau where he rose through the ranks to captain. Pat held many positions with the Portland Police Bureau including chief’s adjutant, executive officer, tactical operations command, US Department…

Marco Vasquez has served in Colorado law enforcement for the past four decades. Rising through the ranks at the Denver, Colorado, Police Department (DPD), Chief Vasquez retired as the deputy chief of administration after a 36-year career with DPD in 2008. Chief Vasquez gained extensive experience throughout his career in internal affairs investigations, drug enforcement,…

Commander Chris Vallejo is a strategic and innovative senior law enforcement official and 28-year veteran of the Austin, Texas, Police Department (APD) and the current commander of APD Training. Commander Vallejo holds a master’s degree in criminal justice and a Bachelor of Applied Arts and Science with specializations in constitutional law and political science. He…

Captain Jason Simon is a 22-year veteran of the Youngstown, Ohio, Police Department. Presently, he is the chief of detectives and oversees all investigations, crime scenes, crime analysis, evidence, and records of the 200-person agency. Throughout his career, he has commanded the Patrol Division; Services, Planning, and Training Division; and Fiscal Unit. He has served…