On a side issue, I was watching an RTO in the third world recently. ATC refused to allow rescue and fire fighting vehicles onto the runway because the captain had not asked for it. It is good training for RFFS to chase the aircraft anyway and to inspect the runway after a technical RTO (not an ATC spacing mixed mode issue). In this case, all that happened was ATC launched the next departure as soon as the RTO had cleared the runway.
Please remember it can be quite hard for flight crew on some types to know if they have a brake/wheel/tyre fire or not. Might be better to stop somewhere and let the RFFS staff have a look before taxiing back to stand/holding point?