Cheney needs to review the Texas Ten Commandments of Hunting. Here are a few:
Be sure of your target and what is in front of and beyond your target.
Before you pull the trigger you must properly identify game animals. Until your target is fully visible and in good light, do not even raise your scope to see it. Use binoculars! Know what is in front of and behind your target. Determine that you have a safe backstop or background. Since you do not know what is on the other side, never take a shot at any animals on top of ridges or hillsides. Know how far bullets, arrows and pellets can travel. Never shoot at flat, hard surfaces, such as water, rocks or steel because of ricochets.
Know your safe zone-of-fire and stick to it.
Your safe zone-of-fire is that area or direction in which you can safely fire a shot. It is "down range" at a shooting facility. In the field it is that mental image you draw in your mind with every step you take. Be sure you know where your companions are at all times. Never swing your gun or bow out of your safe zone-of-fire. Know the safe carries when there are persons to your sides, in front of, or behind you. If in doubt, never take a shot. When hunting, wear daylight fluorescent orange so you can be seen from a distance or in heavy cover.
Control your emotions when it comes to safety.
If you lose control of your emotions you may do something carelessly. If you have just shot a target or animal you probably will be excited. At that moment you may turn with a loaded firearm back towards your friends or you might run with a loaded firearm towards a downed animal with the gun safety off. You or someone else may be in danger once you lose control of your emotions. Show discipline. Rehearse in your mind what the safe actions will be. Do not allow your daydreams to prelace good judment. Show restraint and pass up shots which have the slightest chance of being unsafe.
http://www.tpwd.state.tx.us/learning/hunter_education/shotsafe.phtml