Fire Suppression (fire extinguisher canister): First wireless robot that can enter a burning...

...building carrying a fire extinguisher canister and use it to put out the fire from the inside.  Its extinguisher canisters are designed to be easily and quickly exchanged when it comes back outside so it can quickly go back inside and continue fighting the fire from the inside.

1) First robot above that can head (back) to the roof and replace its own fire extinguisher canisters.  The canisters are dropped onto the roof by helicopter, fire platform (skylift) truck, or fire ladder truck.

2) First robot above to be able to operate semi-autonomously so a human operator can manage more than one robot at a time.