A method, a device, and a communication system include receiving one or more concurrent transmissions from one or more source devices in the communication system; responsive to the one or more concurrent transmissions comprising a single source transmission from a single source device, retransmitting the single source transmission either clear or encrypted based on the single source transmission; responsive to the one or more concurrent transmissions comprising multiple transmissions from multiple source devices, performing one of: summing audio to create a summed resultant stream and broadcasting the summed resultant stream based on matching encryption parameters associated with each of the multiple transmissions; and broadcasting only a selected transmission of the one or more concurrent transmissions from a higher priority source device based on an encryption parameter mismatch between the multiple transmissions, wherein the selected transmission is broadcast based on encryption parameters associated with the selected transmission.