we used to shoot mortar shells at people's houses. i know that it sounds bad, but they would pop about 10 feet from their house and light up their whole front yard in the middle of the night. we would just hold the tube up against the side of the truck and launch them from there while the truck was still moving. one night, we were doing this and we came to a friend of mine's house, and, i guess that the house was a little closer to the street than we were used to or, i don't know. all that i know is that after this one launched, it didn't blow up 10 feet before her house. it didn't blow up before it hit her house at all. it hit about 2-3 inches above a window, then fell, then exploded. nothing got broken, but it could have turned out really bad. that ended that.