The target may be moving, such as walking or running.

As one historian later wrote: "Its aim was right, but the target moved."

"The target is moving," a voice said into a radio three levels up.

Wind variations come into play over such a huge amount of time, and if the target is moving.

Prior to take off they learned that the main target had moved locations.

Some radars can also tell how fast the target was moving, and in which direction.

If the target was moving, the detections must be close to one another in time.

The target is moving too fast to hit from even a slight angle.

While the beam was going from right to left, the target moved forward.

The target moved from where the beams thought it was going to be.