Okay, the user wants me to translate "shoot-down" into Vietnamese. Let me check the rules again. The first rule says to translate all content into Vietnamese. The second rule says if the content is already in Vietnamese, leave it as is. The third rule is to provide only the translation without explanations.
So, "shoot-down" is an English word. I need to translate it. The direct translation for "shoot-down" in Vietnamese could be "bắn hạ" which means to shoot down, like in the context of shooting down an aircraft. Let me confirm if there's a more accurate term. Sometimes "shooting down" can be "bắn rơi" as well. But "shoot-down" as a noun might be "hành động bắn hạ" or "việc bắn hạ." However, in common usage, "bắn hạ" is sufficient. Since the user wants just the translation without explanations, I'll go with "bắn hạ."