Lt. Colonel Michael Dierkes was born in St. Louis, Missouri, and he currently resides in the South County area. Lt. Colonel Dierkes began his career in 1988 and served in the South County and Affton Precincts. He also served in the Division of Criminal Investigation – Bureau of Drug Enforcement, where he was detached to the Drug Enforcement Administration. He then served in the Division of Special Operations – Tactical Operations Unit, until he was promoted to the rank of Sergeant in 1997.
After tenure in the Affton Precinct, Lt. Colonel Dierkes was transferred to the Division of Criminal Investigation – Bureau of Drug Enforcement and later transferred to the Division of Criminal Identification and the Bureau of Crimes Against Persons. In 2006, he was promoted to Lieutenant and was assigned to the South County Precinct.
In 2008, Captain Dierkes was transferred to serve as the Commander of the St. Louis County Police Department Crime Laboratory. In this position, he planned, organized and directed the operations of all sections of the laboratory which include DNA / Biology / Firearms and Toolmarks, Chemistry and Photography. In 2009, Lt. Colonel Dierkes was assigned as Commander of the Municipal Services Unit, until he was promoted to the rank of captain and placed in command of the Affton Southwest Precinct in 2010.
In July 2013, Lt. Colonel Dierkes was transferred to his current position as Commander of the Bureau of Patrol Support. In this position, he is responsible for overseeing day-to-day operations of the Tactical Operations Unit, which includes response to all hostage/barricade situations, civil disorder and execution of all search warrants within St. Louis County as well as dignitary protection details. He also oversees daily operations of the Metro Air Support Unit, a multi-jurisdictional unit that provides proactive/preventative patrols as well as search and rescue missions for the metropolitan St. Louis Area.
Lt. Colonel Dierkes was promoted to the rank of Lieutenant Colonel and assigned as the Commanding Officer of the Division of Special Operations in February 2014.
Lt. Colonel Dierkes earned his Bachelors of Science Degree from Sterling University of Kansas, and a Graduate Certificate in Criminal Justice from the University of Virginia. Lt. Colonel Dierkes is also a graduate of the FBI National Academy Session #249.