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After the cutscene, Go to Rafael's cloth shop. (Don't have to go to cloth shop) Then, go to the pink dot located on your map. Use a car, and run over at least 4 workers. Then kill more workers with your car. Then, go past the small gate next to the trucks and run over the security guard. Then, get out of your car, and where the two trucks are, shoot the red barrel. Then, turn around, and you will see one truck. Get in that truck, and park it near the other red barrel. Get out of the truck, and shoot the red barrel. As soon as all the trucks are blown-up you will be informed that you have passed the mission. Wait about 10 seconds until you get in your car because you will receive a phone call from Colonel Garcia Cortez.