One of the recent murder-by-police cases was, according to NBC News, given ketamine. I certainly never saw it in ambulance bags back when I was practicing, and can't imagine it being used in the field.
So, does anyone see it used by your local ambulance service?
Yep. It is on many of our local ambulance services protocols including the local CCTs. Usually it is indicated for pain during prolonged extraction or only occasionally as a chemical restraint. The thing that is being discussed around here is all of the criteria that have to be met for chemical restraints to be used before transporting a patient. I can't imagine they were met in that case.