Yeah, most agencies have the AES multikey encryption package when they switch systems or upgrade radios on an existing one. It's usually up to the agency's Chief or Sheriff whether they want to be in the clear, fully locked down, or use selectable encryption(also, some politics usually get involved). As with AARRS down here, a handful of LE agencies operate in the clear and can switch to encryption if they want, with the keys for all other agencies around them. SAPD, BCSO, etc, loaded in their radios. On the LCRA side, I know some New Braunfels PD have GATRRS and the Comal SO channels since Comal switched. I would assume they loaded the SO keys during key loading.