No inflight emergencies, but an aborted takeoff once. Pretty amazing how fast a 767 can stop when they really step on the brakes. We actually had to remain just off the runway for 20 minutes to allow the brakes to cool off. Then it was back to the terminal, where it was determined that it was a malfunciotioning indicator. Prior to our second attempt at takeoff, the engines were run up all the way for a couple of minutes, just to make sure everything was OK. And it was.