So, to sum it up
For starters, there's the problem of incompatible equipment. Then there's the bandwidth issues, which is kind of surprising. The there's the random disconnects, which, given the bandwidth issues, is understandable. Finally, you have a backend that the police force is not qualified to run, which is hardly surprising (I doubt they have many statisticians in uniform).
In other words, the whole thing was a fiasco from the start. It's nice to know that Rekognition can apparently only handle one camera at a time, and is very picky on the camera it can connect with. Good.
All in all, I am quite pleased with the results of this project.