Since when do weapons automatically classify a person as an "enemy combatant?" You had two armed men in a large crowd. That does not seem to suggest a major threat to military personnel. Imagine if the American government treated it's citizens the way it treats the Iraqi's. Instead of only potentially dying for carrying a firearm and being confronted by law enforcement, they simply call in an apache to kill everyone in the group, armed or not.

If a foreign army were occupying my region I sure as hell would be walking around armed with military weaponry.