That is all the state had to prove, but with there being no witness to anything but the sound of a possible gunshot the judge could have found them not guilty. At 140 yards away a gunshot can sound the same as a gunshot 400 yards away depending on the calibers and other factors involved. Maybe some night hunter was killing a deer 3 or 4 hundred yards away in the woods and it just happened to be at the same time they were at the stop sign. There was no witness to a flash, no shell casing, no bullet holes, no dead deer, no live deer seen, no stop sign with holes in it, nothing but the sound of a possible gunshot. Sure, the case law supported the conviction, but the totality of the evidence seems not to support it. We have pretty much heard from both sides and no one has said there was any evidence except for the sound of shots coming from the direction of the truck. Just not enough there and that's what the supreme court decided.