what dose Phoenix Fire uses the RWC Talk groups for

[scannermike11]

how are these Talk groups uses for by Phoenix Fire

1615 64f D PHXFD K6 K6 - FDCOM 6 - North Fire-Tac
1614 64e D PHXFD K7 K7 - FDCOM 7 - East Fire-Tac
1613 64d D PHXFD K8 K8 - FDCOM 8 - South Fire-Tac
1612 64c D PHXFD K9 K9 - FDCOM 9 - West Fire-Tac
1611 64b D PHXFD K10 K10 - FDCOM 10 - Major Incident / Mountain Rescue Fire-Tac
1610 64a D PHXFD K11 K11 - FDCOM 11 - Major Incident / Mountain Rescue Fire-Tac
1609 649 D PHXFD K12 K12 - FDCOM 12 - Major Incident / Mountain Rescue Fire-Tac
1608 648 D PHXFD K13 K13 - FDCOM 13 - Major Incident / Mountain Rescue Fire-Tac
1607 647 D PHXFD K14 K14 - FDCOM 14 Fire-Tac
1606 646 D PHXFD K15 K15 - FDCOM 15