Irrational Fear

I am extremely creeped out by helicopters in the sky that just stay in one spot and don't move. I'm not sure why it bothers me so much but it does. Today driving to work I could see two helicopters perched in the sky above LAX and they just stayed like that for a half hour. If they were circling or moving even a little it wouldn't bother me. I feel like anything that is in the sky, within our atmosphere, should be in motion or some how rooted to the ground.