They're both gonna die regardless. Try and help them and you get the snot kicked out of you. Unfortunatley we don't get to see the rest but my bet would be the cameraman used his tag on the other one, either that or they called someone else with a tag. OR.... the one guy shot them both and went and bought his wife a tag. Which ever happened, I don't think taking one or both is an ethical issue depending on who actually shot the other buck. If they did it legal... theres no ethical issue here.
"The deadliest weapon in the world is a Marine and his rifle." General John J. "Black Jack" Pershing, US Army
"Most men go through life wondering if they made a difference, Marines don't have that problem." President Ronald Regan