The St. Louis County Police Department says a partnership that was quietly started between its officers and the St. Louis Police Department helped reduce crime in both Jennings and the nearby Walnut Park West neighborhood. The two departments began an extensive partnership last year at the suggestion of the Teneo Group, which was at the time evaluating the two departments. St. Louis County was looking for ways to reduce aggravated assaults in the area, and Walnut Park West is a city hotspot for violent crime. A memo obtained by the St. Louis Post-Dispatch revealed the depth of the cooperation, including coordinating radios and license plate readers. But many leaders found out about it in an article about that memo.