I was picking up same Medical/fire incident on Tac 2 and Tac 3 today. Tac 2 154.3550 pl 203.5 and Tac 3 153.1775 pl 186.2. Fire/EMS units talking back and forth. Could Tac3 actually be the input/TX for Tac 2? The RR database doesn't show a pl tone for Tac 2, so maybe I just found one. Agencies involved were CCSO, OSP and Vernonia FD. (As the crow flies, its about 70-75 miles from my house.. getting great RX on the roof antenna today.)