Because of the way they work, the typical exhaust speed of jet engines is transonic or faster, therefore most jet aircraft need to fly at high speeds, either supersonic or speeds just below the speed of sound (“transonic”) so as to achieve efficient flight. Continue reading to see why they shouldn’t fly too low.

If you weren’t quite able to see what happened, these two Mirage 2000 jets basically shattered every window of Brazil’s supreme court building. Fortunately, there were no injuries to report, though repair costs are another story.