MPD Encryption Update

Yesterday, I did some monitoring of the Metropolitan Police (MPD) trunked system. In addition to the encryption on the district dispatch talkgroups, the district Tac channels and the SOD talkgroup are encrypted. I wasn't able to confirm some of the other common talkgroups (MPD 1, MPD 2, MPD 3, Harbor Patrol, etc.), but it seems likely they are encrypted as well.