9891-9910 is 20 units that GH is getting, 9796 is a MHV unit. 9796 is most likely a bus that will be used for training until there actual units go to them, one of them being is 9901 which I've seen at the JFK Vendor.
I'm not entirely sure if I'm correct on this but 6700 from MJQ is retired, hence 9422 being in service today. Also 6765 from Hale is retired anyone can correct me on this if I'm wrong.
Not sure if this was mentioned or not but 1494 is delivered to SC Depot.
1493 is currently in NJ and I'm assuming it will be assigned to SC Depot as well.