During Operation Show Me Justice, the federal law enforcement surge in St. Louis, ATF, @SLMPD, @FBIStLouis, and @DEAStLouis responded to a shot detection notification in the Walnut Park East neighborhood. Investigators located shell casings nearby and approached two men in the area. One man pulled out a firearm, but after a brief stand-off, dropped the gun and fled. Agents pursued and took him into custody. The firearm was recovered and will undergo further analysis. The other man who was cooperative was later released at the scene. Operation Show Me Justice puts federal and local law enforcement together on the streets of St. Louis, allowing us to respond quickly to gunfire, recover crime guns and identify individuals who may be driving firearm-related violence in our communities.