The Sirens of Connecticut.

There at least 6 distinct sirens blaring outside this morning. It sounds like a police-fire-ambulance brigade is stuck in neutral, since I don't hear any doppler effect. Just got quieter for a bit, and here we are back again.
Word around town is that all the cruisers outside belong to officers attending some sort of educational thingy, and their graduation is today. Perhaps all these sirens are just the police-style graduation celebration?
If it's not, then someone is certainly in quite a pickle.