High speed chases will always proceed from an area of light traffic to an area of extremely heavy traffic. If you know someone who tortures animals and wets the bed, he is either a serial killer or he works for Internal Affairs. Placing a gun back in a shoulder holster with your finger on the trigger will cause you to walk with a limp. Flash suppressors don't really. If a cop swings a baton in a fight, he will hit other cops more often than he will hit the bad guys he swings at.
Bullets work on veteran cops too.
They also work on weight lifters, martial arts experts, department marksman, Vice cops, S.W.A.T. jocks, and others who consider themselves immortal. When a civilian sees a blue light approaching at a high rate of speed, he will always pull into the lane the cop needs to use. If you drive your patrol car to the geometric center of the Gobi Desert, within five minutes some dumb civilian will pull along side you and ask for directions. You can never drive slow enough to please the citizens who don't need a cop, and you can never drive fast enough to please the ones who do. Any suspect with a rifle is a better shot than any cop with a pistol.