Keith Knotek is a retired sheriff's sergeant and police commander with thirty years of law enforcement experience in California. Keith has written several books, including From Sorrow to Amazing Grace: One Cop's Journey, which was turned into a movie titled One Cop's Journey in 2022.
Keith is a graduate of the FBI Law Enforcement Executive Development Association Regional Command College, the California POST Executive Course, the California POST Sherman Block Supervisory Institute, and holds an MA in Organizational Leadership and a BS in Criminal Justice. He is an adjunct university instructor and lectures on topics related to mental health, resilience, and law enforcement. Keith is an Advisory Board member for the Violently Injured Police Officers Organization (VIPO) and enjoys volunteering, boating, and fishing. He lives in Prescott, Arizona, with his wife, Lily, and has two adult daughters.
Detective Mario Oliveira is retired from the Somerville Police Department where he served proudly for 17 years. On November 2, 2010, while assigned to the ATF Boston office as a Task Force Officer, Detective Oliveira was shot six times at point blank range while serving a Federal arrest warrant. The injuries sustained during this incident along with subsequent medical setbacks(heart attack & stroke) directly related to the shooting injuries forced Detective/TFO Oliveira to retire. Since being retired, Detective/TFO Mario Oliveira has dedicated his time to educating and assisting Police departments & law enforcement officers and their families on the inherent dangers of police work and how to cope with the tragedy of being seriously injured or killed in the line of duty. Detective Oliveira is the Co-founder of Violently Injured Police Officers Assoc. (a 501c3 non-profit organization).
Det. Mario Oliveira is currently employed with New England State Police Information Network (NESPIN) as the Eastern Massachusetts Metro/Boston area Law Enforcement Coordinator.
