Enemy Missile
1. When an enemy missile is coming towards  you then go behind one of the buildings and the missile will explode safely when it hits the building.
Enemy Fire
1. Putting a building between you and enemy fire will protect you.
Firing Missiles
1. When your radar picks up a target as shown below-
Press Lock then press Fire. Your missile will then search for the target and destroy it.
2. Lock on an jet or helicopter enemy target from behind a building, and as long as you are far enough away from the building when you fire the missile, it will go over the building and search for the target.
FIring Shells
1.  When your radar picks up a target as shown below
Then press the Left Hand tank Button to display turr as shown below
The controls now select the turret. Now you can
adjust the gun elevation to get the correct range of the target.