I've asked this question before and have never gotten a definitive answer: How many major police departments in America issue a CZ pistol to their officers? From my research, I think the answer is none.
There are actually quite a few. CZ used to have a sales rep that traveled the US demonstrating and selling to PD's. Then they decided they didn't need that police business and laid him off about 4 years ago. Glock on the other hand has many reps selling to PD's and has from the beginning. Glock doesn't seem to go after military contracts. Beretta seems to concentrate on them. Mostly marketing IMO.