4 ms·Then you're shooting death rays in the sky, endangering aircraft like a thousand laser pointers.by kijin 9y agoThen you're shooting death rays in the sky, endangering aircraft like a thousand laser pointers.firethief 9y agoInverse square law. Any aircraft close enough to be affected are having a bad problem anyway.MertsA 9y agoYeah but that's with respect to the focal point. The focal point could be a good ways up in the air.