Originally Posted by Delta1067

The second day started in Chicago and ended in Des Moines, Iowa with a stop in Memphis, TN first. I made two nice landings. We followed a FedEx jet out of Memphis all the way to De Moines. The air traffic controller asked us both what our speed was in relation to the speed of sound. We were both flying at 77% the speed of sound, so the controller didn't have to have one of us slow down for the other.