Isom also announces continued downward trend in murders.
Mix of uniformed, plain-clothes police officers will be monitoring the crowd at Busch.
The chief’s office is sending to officers a safety bulletin along with a video.
Undercover buys started back in July, led to coordinated pre-dawn raids in Missouri, Illinois.
Up to $400,000 will be spent on study to improve public safety efforts.
US News and World Report says St. Louis is “America’s Most Dangerous City”