Re: The most amazing engineering
I spent a week on a training course at the University of Exeter in the mid-90s. One evening I was drinking in one of the smaller, quieter bars and got chatting to a campus security guard who had dropped in for a little light refreshment. Just before 9pm he said to me, "Come and listen to this," and unlocked the patio doors. We stepped outside, facing south, and he stood there looking at his watch. "Any minute now... just a few more seconds..."
Concorde had just gone supersonic, about 15 miles out over the sea.