This trophy requires you to blow up all 3 bomb dumps during the mission Pont Du Fahs Airfield. The bombs are located on the opposite side that you spawn on. They're behind the 2 buildings at the other side. They look like 3 sided sand bunkers with some camouflage netting on top. When you blow up the middle one, it will also blow up the one to it's right. However, the one of the left will be unexploded. To fix that, place a couple explosives such as dynamite in between the left and middle bomb dumps and then blow the middle one up. If done correctly, all three will blow up at the same time. Be sure to save before attempting incase you mess up. Video guide credit goes to PS4Trophies.