Those frequencies are correct and they are used infrequently. They are used for EOC to EOC Comms. Once a month Baltimore Co tests on it as well as some other local EOC's
All MEMA vehicles have radio's with those frequencies in it as well, but for the most part Nextel has takin the toll on these frequencies for the somewhat secure comms and coverage that Nextel offers to the staff.
If you have been listening to MD DMIL frequencies you can here some MEMA Disaster teams that have been sent out into the field to help with assistance after this recent rain event.