DMAT comms
The DMAT teams use Motorola XTS5000's in the UHF-Low (Fed government) range. The frequencies seem to vary from mission to mission, and are almost always encrypted. These radios are issued as needed for each event, and are so tightly secured that even the comm folks at the team level are not given the system or encryption keys.
Individual teams have been known to use radios provided by their respective sponsoring agencies during training exercises, but during actual deployments they are required to use only the HHS issued radios.