Further to all the above posts, I recall my dual flight in the Mirage and the pilot (Wing Commander Jim Treadwell) letting me fly from the back seat as we went through Mach One. As he later manoeuvred for a practice forced landing I asked him what airspeed he intended to use over the fence. His reply was that one certainly did not land following a practice flame-out forced landing pattern but went around from a safe height as the high sink rate was positively dangerous. After all, (he said) - it was a training exercise - not a crashing exercise...