What kind of equipment use the firefighters to cool down the brakes ? Are they simple fan blowers ? What is the procedure for the firefighters after a RTO ?
Air conditioning carts are ideal, however I have used air start carts many times and although the airflow is warm it is still very effective in reducing brake temperatures to safe levels, you will usually have to 'do it yourself' as most ground staff will not go anywhere near smoking wheels. If fire is already apparent the only really safe option is dry powder extinguishers,although Co2 can be bounced off the tarmac and onto the fire. Co2 or water directed straight onto the gear will nearly always cause catastrophic thermal shock and explosions containing shrapnell as well as rubber. Oh yeh, and ONLY approach from fwd or aft or you could recieve a facefull of wheel !
Safe flying.