Picture this: You’re a smuggler heading to and from Pakistan from Afghanistan, intent on making a quick buck without any regard for where your goods go. There’s a mix of assault rifles, ammunition and poppy in your shipments, but you’re letting the details take care of themselves. Then one day, your world gets shaken up: Marines in full battle rattle stop your vehicle with a Light Armored Vehicle, armed with a 25mm chain gun and two 7.62mm machine guns. They’re all business, and they don’t seem thrilled to learn your carrying contraband. Since November 2010, that has been the job…