If you mean Airlift Northwest they are on 155.2950(Primary) P25 NAC 293 also I hear them on MED-COM 1 463.0000 MHz. They will be moving the new WSDOT P2 Radio System later this year.
Aviation frequencies for communicating with ATC and other aircraft. Established local hospital and EMS frequencies for communicating with those folks. Dispatch communication in that area is not by radio.