At 57th Street, Green crossed into a vacant lot with Gonzalez and Hernandez in pursuit in an unmarked Chevrolet Tahoe. The Tahoe jumped the curb into the lot. As Gonzalez was about to get out of the SUV, the officers said Green turned toward them with a black Smith & Wesson .45-caliber pistol in his right hand and pointed the barrel in their direction, records show.