i called myself and talked with billys dad,the guy was using a compound bow with just a triger release no drawlock.They think the friend was still in the woods but coming out and a buck ran by and he shot and missed the buck and the arrow hit the car went through the glass and hit billy,he said the broadhead only had one blade left when it hit him but the tip of the broadhead penetrated his vertabra a little.The law is still trying to make sure there weren't nothing bad going on between the two.Billys dad said he knew they were very close friends and he thinks it was just a very bad call on the shot.