Mikeak01, when you were a kid, did you ever shoot an arrow in the air?  It was scary.  We did and didn't have a clear idea where it was going to land.  Being young and dumb, we were lucky and decided quickly not to repeat it.  Now, a bullet shot into the air is virtually invisible.  It reaches its peak and slowly starts its return to earth.  But where will it strike?  It will be effected somewhat by windage, but imagine its velocity when it strikes the earth or something else.  So you say, shoot in the air...  That is not a good idea.