[citation][nom]crashtest[/nom]The beam will attenuate (lose intensity) as it moves through the air, basically it will lose energy heating up the air. This is more severe if it's moist air hence the ship mounting issues mentioned.The beam will also not stay in a perfect column it will disperse as it interacts with the air. As the beam increases size it becomes a less effective weapon, the energy is no longer focused in a small area.[/citation]
The beam will also, most germane to the original question, *not be fired at golf courses*. Unless you are golfing on the moon, you stand a pretty slim chance of being caught by friendly fire since the weapon will be used on *airborne targets*.