Communications-Applied Technology makes this

ICRI-2P

Incident Commanders’ Radio Interface

I don’t know how long they’ve been making them — but this is the type of technology that New York City cops and firefighters had been demanding for years

before 9/11—that, to a large extent, they still don’t have. So it would seem that, at least at present, the obstacles are political — not technological — to having different groups of first responders communicate with each other.