Robert Cook is a sergeant with the Larimer County Sheriff’s Office(LCSO), located in Fort Collins, Colorado. He currently supervises the LCSO Co-Responder Unit, which is comprised of 6 clinicians and 5 deputies. He also supervises the Thompson School District/LCSO School Resource Deputy Unit.

Sgt. Cook began his career in 1987 as a wildland firefighter at LCSO. In 1988, he became a Dispatcher for the Communications Unit. While working as a dispatcher, he attended and graduated from Aims Community College Basic Peace Officer Academy and immediately joined the LCSO Patrol Reserve Deputy Program. In 1991, he became a full-time deputy assigned to Patrol. In 1997, he was promoted to Sergeant in Patrol. He also later served in the Professional Standards Unit and the Investigations-Crimes Against Persons Unit. Collaterally, Sgt. Cook served on the K9 Unit, Arrest Control Tactics Team, and SWAT. In 2004, he was promoted to Lieutenant, assigned to Patrol.

As a Lieutenant, he also worked in the Executive Services Division, assigned to Training, Background Investigations, Concealed Handgun Permits, Professional Standards, and Fleet Services. In 2009, he retired from SWAT as the Team Commander. In 2010, he became a certified Terrorism Liaison Officer (TLO) with Colorado Information Analysis Center (CIAC) and built up the LCSO Team of TLOs. He joined the Colorado Chapter of Concerns of Police Survivors (COPS) in 2016 as a Board Trustee. In 2016, he returned to Patrol as a Platoon Commander and began supervising the new LCSO Mental Health Co-Responder Unit. In 2019, he voluntarily reverted to his previous rank of Sergeant to spend more time caring for his daughter, who had developed severe anxiety and obsessive-compulsive disorder.

In 2019, he was elected to be the President of the Colorado Chapter of COPS, where he served 2 terms. He now continues his involvement with COPS as Immediate Past President. In addition to serving as a Lead TLO, Sgt. Cook is also the Co-lead for the Larimer County Threat Assessment Group (TAG- An FBI Model, Multi-disciplinary Community Behavioral Threat Assessment and Management Team). Finally, he serves as an Assistant Coordinator of the LCSO Peer Support Team. Sgt. Cook is a graduate of Northwestern Police Staff and Command School (2012) and the National College of Police Staff and Command (2019). He has also studied at Colorado State University, Columbia College, and Front Range Community College. Sgt. Cook currently serves as a board member for the International Co-Responder Alliance (Since 2021).