1) Place a soldier somewhere near strong lights. Airbase or headlights of a car will do.
2) Set time to midnight.
3) Turn NV and laser on.
4) Walk into the light, stop and turn around few times.
5) Observe changes in laser's beam appearance.
6) Repeat the process, but this time place the soldier away from civilization, for example at grid 038059.
7) Turn around and observe, that the beam is bright and opaque all the time.