Back of the clock operations, startle factor etc. The 767 brakes can heat a lot during extended taxi (hardly applicable at SNN), let alone after an abort. Any taxiing beyond clearing the runway is a bad idea and having Fire Trucks in attendance and to monitor break temp if no onboard brake indications is a must. Got great service from Boston Airport FD once after an abort. We sat just off the runway until they were satisfied with the decreased brake temp.