Note: this can only be done in the Dev build.
1.Go to the editor.
2.Place a Kamysh (player as gunner), a helicopter and an empty land vehicle.
3.Preview.
4.Switch to the titan missiles and note how it says "AA".
5.Try to lock on to the helicopter. You can't.
6.Try to lock on to the vehicle. Success!
7.Be confused. (optional)