> If you've ever flown on a plane, altitude has been given as feet and distance in miles. If you fly a plane (not just on a plane), those are nautical miles, n

> If you've ever flown on a plane, altitude has been given as feet and distance in miles. If you fly a plane (not just on a plane), those are nautical miles, not land miles. And speed in knots. And rate of climb in ft/min.