by Richard Sheffield
The accuracy required to destroy a target increases as you move up in difficulty levels. In other words, it's much easier to successfully strafe a target or gun down an enemy aircraft when playing in Rookie mode than it is in Veteran or Ace mode.
In Rookie mode, you only have to get close to the target and it will be destroyed. At the Ace level, you really have to hit the bull's-eye.
Figure 9-3. Changes in Gun Accuracy
As you increase the difficulty level, the size of a strafing target decreases, forcing you to be more accurate.