In their entire careers and maybe even in their lifetime, Air Defence operators may never be actually attacked by an enemy aircraft. If they do get such an opportunity, it may be just once. In the fog of war, can a soldier afford to lose that one opportunity, that he gets in his lifetime, by making a mistake and allowing the enemy aircraft to escape? It may be possible that the soldier mistakes enemy aircraft as own and allows them to escape. Alternately, the soldier may mistake own aircraft as enemy aircraft and engage them. Unless the soldier has faced actual or near actual situation many times and practiced sufficiently, he is likely to miss the opportunity. Simulators can bring war-time or operational situation to the soldier in peacetime, in classrooms or in training areas. A soldier can now enter war as a veteran, having experienced warlike situations on the simulator.