A security based messaging system is proposed for communicating within a VIP security convoy and location. The system would allow real-time communication between components like the command post, vehicles, choppers, and security teams. It must function across different devices with strong encryption despite low bandwidth and jammed communications. Messages would need to be transmitted securely with various media like text, audio, video and graphics with low latency, even during crises. Communication would also be required between security and external agencies like police.