Your next task is to get better medical supplies for your allies. Begin the mission in Grotta Contrabandero as you head into the higher cliffs to seek out the mission marker. You won’t have to go far from the place where the previous mission (Connect the Dots) ended, so it shouldn’t be difficult to find.
After a short cut scene you need to steal a tank. Head into the plane and fly to the north toward Ponere. As you approach the marker, parachute down to the convoy below. You need to land on top of the tank, but you must wait for the shield to drop. This happens consistently, but you need to wait until it goes down before you drop on top of the tank.
Get inside the tank and use it to take out any other vehicles in the area, then head to the next destination point. Shoot the gate controls to gain access to the base and continue toward the docks. Take out any enemy vehicles that cross your path, which should be pretty easy in your overpowered tank. Move the tank into the transport to complete the mission.