I disagree. There are videos out now that show the shooter on the rooftop of the Losee Center building just opposite of where Kirk was sitting with a clear line of sight. Distance is about 140 yards. Judging by the video of impact that I unfortunately watched, the sound you hear is the supersonic crack of the bullet, which means most likely a rifle round. Kirk was hit in the neck, which most likely means the shooter was aiming for torso and missed high (neck), which is common for inexperienced shooters at that kind of distance. 140 yards is pretty easy. I've taken people out shooting long range before, who have never shot a gun in their lives, and had them get a first-round hit on a 66% IPSC target at 1,000 yards. 140 yards is relatively easy. Don't even really need to factor in wind. It's basically point-blank if the rifle is zeroed properly.