In 2002, Peek was appointed to the rank of investigator where he would later work Homicide, Larceny/Fraud and the Zone 6 Criminal Investigation Division.
In 2007, Peek was assigned to the Narcotics Unit and went on to work with the High Intensity Drug Trafficking Area task force, until he was promoted to the rank of sergeant in 2012.
Peek promoted to lieutenant in 2016 and was assigned to Zone 1, in northwest Atlanta, where he was assigned as the Crime Suppression Unit commander. In 2019, he was appointed to the rank of captain and assigned to Zone 3, in southeast Atlanta.In November of 2019, he was appointed to the rank of major where he was assigned as the Zone 3 commander. Major Peek has a bachelor’s degree in criminal justice from Columbia Southern University.