very common, but in a country like mine that the people who live in a square mile mile is the biggest on the earth and if someone do as you said, believe me the results will be completely differents. In here there's the habit that people shoot a lot in the new year's eve and when that happens at least 10 people got hurt and 3 or 4 die because lost bullets. I remember a lady who went out to say good bye to her son and a bullet killed her on the sidewalk, other case was the one where a 6 years old girl was playing out side and a bullet hit her in the head and she died on her way to the hospital. Like the mentioned ones here are plenty. When you shoot a bullet to the air it will reach a very nice high depending the power and the quantity of gun powder. When the bullet comes down comes with the twice of speed, pression and friction making it more dangerous than when it came out of the main source. So no shoots to the air. If u didnt c any of the bullets land its probably because they wer shot out at an angle. This means the bullets would -no doubt- have to land somewhere else...other than where that wedding took place. I dont think the bullets should be harmful on their way back down because they (hopefully) would have lost all their energy. And