Of what kind? Because the next thing that happens is a lawsuit slapped on your desk by a very rich company for property destruction. They have a vested interest in protecting not only the property but also the business model so they will use the law to maximize punishment for such behavior. And the downside to shooting down a drone is the telemetry it collects makes it pretty easy to prove the shooter is the aggressor and Amazon's following all relevant local laws.

Going on the legal offensive and putting them in the position to prove they're doing no harm (including a discovery process to confirm their telemetry isn't gamed or flawed) is a much better tactic. Still a legal uphill battle, but one you're signing yourself up for anyway if you take a gun to an Amazon drone. At least this way it's on your terms, not theirs.

You discharged a firearm wildly into the air with no concern for where the bullets may land. And you thought someone flying a drone was somehow a threat. Anyone ordering packages by drone now has to worry their items might not make it. You’re not coming off as a sane and stable individual. It is not clear that you will walk free, especially with the right jury.

If Amazon's lawyers can convince the court that shooting down a drone is interference with interstate commerce (which has been widely construed to mean "commerce" in this day and age) and is therefore a violation of https://www.law.cornell.edu/uscode/text/18/1951, then unless I misunderstand the process you would find yourself tried by a jury of your peers in Denver, Colorado Springs, Grand Junction, or Durango.

I'd say best of luck in such a case, because it'll be Amazon's telemetry on whether the drone was an actual threat over testimony that their lawyers will do their damnedest to prove unreliable (or at least less reliable than the avionics).