A system that facilitates inter-operable communications between first responder (FR) wireless communications devices at an emergency location. The system includes an on-site tactical communications plan that is configured into a communications control device. The communications control device is part of an emergency command vehicle. First responders utilize their associated FR devices to establish a wireless IP data session with the communications control device via a macro wireless network. Once the IP data session is established, the FR device is authenticated by the communications control device. The tactical plan is then transmitted to the FR device via the established wireless IP data sessions. Once the tactical plan is transmitted to the FR devices, each of the FR devices comprises identical radio configurations and channel assignments.