Anti Aircraft Gun

Shoot anti-aircraft guns on the drones that you want to bomb, is guided by the map in the top left corner. When shooting don't forget that the plane is not in place and the rocket flies up to him not instantly, so have to shoot ahead of the curve.
For downed drones get coins, which you can send submarines to the antiaircraft guns. A boat with a red icon will be repaired and yellow will fill up ammunition. Once recruited no less than 20 coins ready submarines to the mandrel. Choose the right ones and she will go to the aid of the anti-aircraft gun.When the submarine makes it to his mouth and, she unloaded the cargo, loaded with oil and swims back. Brought back oil accumulates in the tank in the upper right corner and once filled to the brim, and above it starts flashing the icon "money", then you can sell. Click on the flashing icon and get in safe still a lot of coins.
New green jet, It's your assistant, he shoots down drones. It is especially useful at long range where the drones are bombing submarines.