One way a quadcopter is used today is to capture important events from above if you need a certain angle. Another way is to surveil areas,
Russa, or the U.S.S.R. at that time. When the U.S. found out about Russian missiles in Cuba, they established sanctions once the U.S.S.R. got rid of the missiles. So as soon as the Russians put missiles in Cuba, it was a domino effect that led up to the cold war.
I would say that the answer would be that Christianity is legal to practice. Check out the Great Controversy for more information.
