Back in the sixties when Lockheed were trying to sell their 104 a USAF demo was sent to Ottawa to impress the military and governmental big wigs.
They persuaded the pilot to do a bit of a flying demonstration. Unfortunately, the cold temps and his exuberance saw him go over the field a wee bit above Mach one. The effect on the new civilian terminal under construction was dramatic. It took out almost all the glass and there was fear of structural damage. The costs in '60s $Cdn (it was worth something then) was estimated to be about $100,000.