Final answer:
You should aim slightly ahead of the approaching high speed craft to ensure your fire intersects with the target due to the craft's high speed.
Step-by-step explanation:
In order to direct your fire at an approaching high speed craft, you should aim slightly ahead of the target. This is because the craft will continue to move forward while the projectile is in flight, due to its high speed. By aiming ahead of the craft, you can ensure that the projectile intersects with the target.
For example, imagine you are trying to hit a fast-moving boat with a cannonball. If you aim directly at the boat, by the time the cannonball reaches the position where you aimed, the boat would have moved forward. However, if you aim slightly ahead of the boat, the cannonball will meet the boat at the intended location.