portable situation recognition system

Thinking about the Hamburg G20 quarrel quite recently, I am thinking of a portable device/system (inside cars or even wearable) for police, fire brigade oder emergency ambulance.

Device has a wide surround view and uses massive image processing to recognize things or persons in the environment without being in direct contact to them and also recognizing what is happening. Could also be combined with infrared cameras. Helmets could contain screens that show environment but augmented with detected things, maybe weapons on persons or detected chemicals after an accident or similar.
Data can be streamed live to emergency situation centre and/or securely (=unmodifiable) stored on device. Device can aid wearer in his decisions by applying AI rules for detected situations.