Originally Posted by
buffo
Regarding termination: if the stand of trees is *thick* (meaning you can't see anything through the gaps in the branches except more trees), then this is an acceptable termination point. Another good test is to lay on the ground and look up at roughly a 30 degree angle through the treeline to see if you can see any patches of sky. If not, then you should be OK.
Note that in the USA, if you have a properly terminated outdoor show you are no longer required to file for an FAA letter of non-objection. Just make sure you aren't doing this within the laser free zone of an airport. (Technically you *can* perform a fully-terminated show even if you are within 2 nautical miles of an airport, but it's going to attract unwanted attention that you probably aren't prepared to deal with right now.)