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.
Daniel Blackdeer, Deputy Chief
Deputy Chief Blackdeer began his law enforcement career with the Wisconsin State Capitol Police in 1990. He served as a second shift patrol sergeant and Dignitary Protection Unit Sergeant prior to his promotion to Deputy Chief in 2005.
Deputy Chief Blackdeer is certified as a Defense and Arrest Tactics Instructor as well as a Unified Tactical Instructor. He continues to assist in these areas during departmental in-service.
Deputy Chief Blackdeer is a member of the International Chiefs of Police Association (IACP). He was primarily responsible for creating the Capitol Police Section for this prestigious association. He is a past President for the IACP-Capitol Police Section and the Dane County Police Chiefs Association. He is a 2004 graduate of Northwestern University Police and Staff Command and a 2016 graduate of the Leadership in Police Organization course.
Cheryl L. Ravenscroft, Captain
Captain Ravenscroft began her law enforcement career in 1985 when she joined the US Army as a military police officer. After receiving her honorable discharge from the military, Cpt. Ravenscroft started her career with the State of Wisconsin in 1989 at the Volk Field Air National Guard Base as a Security Police Officer III.
In 1992 Cpt. Ravenscroft joined the Wisconsin State Capitol Police where she has promoted through the ranks to her current assignment.
Cpt. Ravenscroft is a member of WLEEDA and WLEOA. She is a 2002 graduate of Northwestern University Police and Staff Command and a 2015 graduate of the Leadership in Police Organization course.
Malanie A. Von Haden, Lieutenant
Lieutenant 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, Lt. Von Haden joined the Wisconsin State Capitol Police where she has promoted through the ranks to her current assignment, Lieutenant of Operations. She currently supervises Patrol Operations, the Community Policing Program, and the Dignitary Protection Unit.
Lt. Von Haden is a member of the Wisconsin Identification Association and a 2015 graduate of the Leadership in Police Organization course.
Christopher M. Litzkow, Lieutenant
Lieutenant Litzkow started his career with the Wisconsin State Capitol Police in 2014 where he has promoted through the ranks to his current assignment, Lieutenant of Specialized Services. Lt. Litzkow currently supervises the Communications Center, Criminal Investigations Unit, K9 Program, Unmanned Aircraft Program, Support Services, Safety, and Training.
Lt. Litzkow is certified by the WI DOJ as a Firearms and Professional Communications instructor, and is an FAA licensed airman and remote pilot. Lt. 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).
Supervisory Management Team
David M. Davis, Sergeant
Sergeant Davis serves as first shift Madison sector Patrol Sergeant. Sgt. Davis began his law enforcement career in 1999 when he joined the Dane County Sherriff’s Office. He started his career with the Wisconsin State Capitol Police in 2001. He was promoted through the ranks to his current position. Sgt. Davis has been trained as a background investigator, field training officer, vehicle contact instructor, Cardio Pulmonary Resuscitation (CPR), and has attended many other specialized trainings.
Andrew T. Hyatt, Sergeant
Sergeant Hyatt serves as the Administrative and Special Events Sergeant. 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. Sgt. Hyatt worked as a patrol officer on second and third shift before he was promoted to the rank of Detective and eventually Sergeant. He has served as the Safety and Training Sergeant, Patrol Sergeant and Detective Sergeant prior to his current assignment. He is an instructor in Defense and Arrest Tactics, Vehicle Contacts, Cardio Pulmonary Resuscitation (CPR), and Tactical Functional Training.
Mickael L. Price, Sergeant
Sergeant Price serves as Detective Sergeant of the Criminal Investigation Unit. 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 where he traveled with and provided protection for the Governor, First Lady, and Lieutenant Governor. He was promoted to the rank of Sergeant in September, 2016. He has served as a Patrol Sergeant and the Safety/Security 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.
Justin L. Wichman, Sergeant
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).
Adam G. Haas, SergeantSergeant Haas serves as Milwaukee sector Patrol Sergeant and oversees the Dignitary Protection Unit. 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.
Tim M. McCormack, Sergeant
Sergeant McCormack serves as second shift Madison sector Patrol Sergeant. Sgt. McCormack started his law enforcement career in 1994 as a Park Ranger at the Northern Highlands American Legion State Forest. In 1997, he started with the Wisconsin State Patrol; his first assignment was as an Inspector at the scale in Racine County. He spent 9 years as a Trooper in Waukesha County, before finishing his State Patrol career in Washington County in 2018. He began his career with the Wisconsin State Capitol Police in 2019 as a police officer and was promoted to Sergeant in the same year.
Abby S. Onsgard, Sergeant
Sergeant Onsgard serves as the Safety, Security, and Training Sergeant. She 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 sergeant in March 2020 and represents our department on county-wide teams such as Crisis Intervention (CIT), Human Trafficking, and Sexual Assault Response (SART). Sergeant Onsgard is certified through WI Department of Justice as an Emergency Vehicle Operations Course (EVOC) Instructor and Master Cardio Pulmonary Resuscitation (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.
Ryan R. Blank, Sergeant
Sergeant Blank serves as Civilian Sergeant, supervising the Support Services Section. 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.