It didn't say the chopper was armed. It just said there were armed personell inside it. Door gunners really only lay down suppressive fire. Those machineguns are by no means accurate. Besides, all the top quality Mexican troops are now working for the drug gangs. Flash hiders and camo will keep him from seeing where the bullets are coming from.
On equipment: You get what you inspect, not what you expect.
On training: Our drills are bloodless battles so that our battles are bloody drills.
On tactics: Cheating just means you're serious about winning.
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