Executive Management Team shares a common philosophy about being successful in law enforcement; provide excellent customer service by providing compassionate law enforcement efforts, foster a work environment that attracts and retains the most professional law enforcement, and support personnel interested in a law enforcement career. We share a passion for using the taxpayers' money in the most efficient and effective manner.
The Supervisory Management Team shares the responsibility of overseeing the day-to-day operations of the department. This team consists of law enforcement professionals who share a common passion for treating all people with dignity and respect while allowing everyone their freedom of speech in a safe and secure open government venue.
Executive Management Team
David M. Erwin, Chief
Chief Erwin began his law enforcement career in 1996 when he joined the Wisconsin State Patrol, where he served in a variety of general patrol duties, investigative assignments, and Master Instructor in Defense and Arrest Tactics as well as a Unified Tactical Instructor. He was promoted through the ranks of Sergeant, Lieutenant (Dignitary Protection and Air Support Unit), and Captain (Commander of the WI State Patrol’s Dignitary Protection Unit).
In July, 2012 Chief Erwin started his career with the Wisconsin State Capitol Police.
Prior to his service in law enforcement, Chief Erwin had nearly 11 years of military service in the United States Marine Corps where he was an Instructor Sergeant with expertise in M1A1 Battle Tank repair, service, and program development.
Chief Erwin is a member of the National Governors Security Association and International Association of Chiefs of Police (IACP) where he was trained in Leadership in Police Organizations in 2010. Chief Erwin earned his Associates Degree in Police Science, graduated class of 1996 with outstanding student award at Northeast Wisconsin Technical College.
Christopher M. Litzkow, Deputy Chief
Deputy Chief Litzkow started his career with the Wisconsin State Capitol Police in 2014 where he served in a variety of assignments including: Patrol Officer, Detective, Sergeant, and Lieutenant of Specialized Services. In 2023, he was promoted to his current assignment, Deputy Chief of Police.
Deputy Chief Litzkow is certified by the WI DOJ as a Firearms and Professional Communications instructor. He is co-chair of the Wisconsin Air Coordination Group and founded the Wisconsin Drone Network. Deputy Chief Litzkow is a 2016 graduate of the Leadership in Police Organizations course, a 2019 graduate of the Wisconsin Command College and is a Wisconsin Certified Public Manager (CPM).
Malanie A. Von Haden, Captain
Captain Von Haden began her law enforcement career in 1999 as a correctional officer at the Milwaukee County House of Correction in Franklin, Wisconsin. In 2002, she became a deputy sheriff with the Milwaukee County Sheriff’s Office. As a deputy sheriff she served as a patrol deputy, a courtroom bailiff, and a member of the Targeted Enforcement Unit. She was promoted to Detective on a general crimes unit and was an Internal Affairs Investigator. She was promoted to the rank of Captain and oversaw the agency’s Huber Law and Electronic Monitoring Unit.
In March of 2013, Captain Von Haden joined the Wisconsin State Capitol Police where she has promoted through the ranks to her current assignment.
Captain Von Haden is a member of the Wisconsin Identification Association and a member of the National Association of Women Law Enforcement Executives. She is a 2015 graduate of the Leadership in Police Organization course.
Abby S. Onsgard, Lieutenant - Specialized Services
Lieutenant Onsgard serves as the Specialized Service Lieutenant where she oversees the Criminal Investigations Unit, Infrastructure Security Unit, Communications Unit, and the Executive Residence Detail. Lieutenant Onsgard began her law enforcement career in 2012 as a deputy for Dane County Sheriff’s Office and joined Wisconsin State Capitol Police in 2013 as a detective in the Criminal Investigation Unit. She was promoted to the rank of Lieutenant in March 2023, and represents our department on county-wide teams such as Crisis Intervention (CIT), Human Trafficking, and Sexual Assault Response (SART). Lieutenant Onsgard is certified through WI Department of Justice as an Emergency Vehicle Operations Course (EVOC) and Master CPR Instructor. She has attended numerous specialized training courses and provides instruction for state employees and new officers on topics such as crisis intervention, sexual assault, evidence, CPR, interview and interrogation, and report writing.
Andrew T. Hyatt, Lieutenant - Patrol Operations
Sergeant Hyatt serves as the Patrol Operations Lieutenant. He began his career of service in the United States Navy from 1998-2002 as an aviation electrician and military police officer. He has been with the Wisconsin State Capitol Police since 2008. He has served as a patrol officer, detective, Training Sergeant, Patrol Sergeant, Detective Sergeant, Administrative Sergeant, and led the Executive Residence Detail prior to being promoted to his current rank of Lieutenant in May 2023. He is an instructor in Defense and Arrest Tactics, Vehicle Contacts, Cardio Pulmonary Resuscitation (CPR), and Tactical Functional Training.
Supervisory Management Team
Mickael L. Price, Sergeant - Executive Residence Detail
Sergeant Price serves as the Executive Residence Detail Sergeant. Prior to a career in law enforcement he served as the Emergency Medical Services Lieutenant with the East Troy Fire Department. Sgt. Price began his law enforcement career in 2013 with the Wisconsin State Capitol Police. During that time, he transitioned into the Dignitary Protection Unit. He was promoted to the rank of Sergeant in September, 2016. He has served as a Patrol Sergeant, Detective Sergeant, and Infrastructure Security Unit Sergeant prior to his current assignment. Sgt. Price also serves as the agency's K-9 handler with his partner K-9 Yachi, an explosives detection dog. Sgt. Price is an instructor for vehicle contacts. He is also a 2017 graduate of the Leadership in Police Organizations course.
Michael J. Harmatys, Sergeant - Criminal Investigations Unit
Sergeant Harmatys serves as the Detective Sergeant responsible for the Criminal Investigations Unit. Prior to his law enforcement career Sgt. Harmatys studied at The University of Wisconsin Whitewater and obtained his bachelor’s and master’s degree in science education. Sgt. Harmatys began his career with the Wisconsin State Capitol Police in 2017 as a patrol officer on first shift. He was promoted to the rank of Detective in 2020. Sgt. Harmatys is a member of the Wisconsin State Capitol Police Crisis Intervention Team, a CCR instructor and also teaches various topics in the interdepartmental training academy. Sgt. Harmatys was promoted to the rank of Sergeant in January of 2021, and Detective Sergeant in April 2023. He is a people-focused individual with highly effective leadership skills and possesses an ability to motivate others.
Adam G. Haas, Sergeant - First Shift Patrol
Sergeant Haas serves as first shift Madison sector Patrol Sergeant. Prior to his law enforcement career, Sgt. Haas studied Business Administration at the University of Wisconsin – Madison. He began his career with the Wisconsin State Capitol Police in 2015 as a patrol officer on second shift. Sgt. Haas was promoted to the Dignitary Protection Unit, where he traveled with and provided protection for the Lieutenant Governor. He is a member of the department’s Crisis Intervention Team, Honor Guard, and was a Field Training Officer on second shift. Sgt. Haas also worked as a Detective in the Criminal Investigations Unit before being promoted to the rank of Sergeant in November 2018. Sgt. Haas is an instructor for Firearms, Taser, and Emergency Vehicle Operations and Control.
John A. Calhoun, Sergeant - Second Shift Patrol
Sergeant Calhoun serves as second shift Madison sector Patrol Sergeant. Sgt. Calhoun began his law enforcement career with the United States Air Force from 1994-2014. Sgt. Calhoun began his civilian law enforcement career with the Kansas City Missouri Police Department in 1998 and then moved onto Jackson County Missouri Sheriff’s Office. In November 2011, Sgt. Calhoun started with the Wisconsin State Capitol Police Department as a patrol officer and he was promoted to Sergeant in May 2023. Sgt. Calhoun is the Fleet Asset Manager, Field Training Officer, Crisis Intervention Team member, Honor Guard and Drone Operations Unit member. Sergeant Calhoun has a family history of 55 years of Capitol Police service.
Justin L. Wichman, Sergeant - Third Shift Patrol
Sergeant Wichman serves as third shift Madison sector Patrol Sergeant. Sgt. Wichman began his law enforcement career in 2006 with the Village of Fall River Police Department. In Oct of 2011, Sgt. Wichman continued his career in law enforcement with Wisconsin State Capitol Police Department. In March 2018 Sgt. Wichman was promoted to the rank of Sergeant and is currently oversees the Field Training Program and the Lottery. Sgt. Wichman is an instructor in Defense and Arrest Tactics (DAAT), OWI/SFST, Cardio Pulmonary Resuscitation (CPR), and Tactical Response. Sgt. Wichman is also a current member of the National Tactical Officer Association (NTOA).
Joe A. Bahr, Sergeant - Milwaukee Division
Sergeant Bahr serves as the Milwaukee sector Patrol Sergeant. Sgt. Bahr began his law enforcement career with the Wisconsin State Capitol Police in 2012. Sgt. Bahr is a Field Training Officer, Background Investigator, PepperBall Instructor and is a Peer Support Team member through the Wisconsin Department of Justice. Sgt. Bahr is a member of the department's Crime Prevention Through Environmental Design (CPTED) team. Sgt. Bahr is a 2023 graduate of the Leadership in Police Organizations course.
Ryan R. Blank, Sergeant - Communications Unit
Sergeant Blank serves as Civilian Sergeant, supervising the Communications Center. Prior to working in law enforcement he served as Firefighter with the Hokah Fire Department and Campbell Fire Department. Sergeant Blank has been with the Wisconsin State Capitol Police since 2013, where he has served as a dispatcher and field training officer. He was promoted to the rank of Sergeant in September, 2017.
Robert Buss, Sergeant - Communications Unit
Sergeant Buss serves as Civilian Sergeant, supervising the Communications Center. Prior to working in law enforcement, he served as a Corrections Communications Supervisor in the Electronic Monitoring Center with the DOC for 8 years. He also worked in the Electronic Monitoring Center since 2006 as an operator, which was the start of his state service. Sergeant Buss has been with the Wisconsin State Capitol Police since 2022.