In the situation where the player is group leader, and has an AT weapon equipped AI under his command. They are overlooking an unsuspected enemy armoured target and some nearby infantry. The players group is in stealth mode and is holding fire. The player tells the AT AI to target the armoured target, then waits. The AT AI reports "Ready to fire" (or equivalent phrase).

OBS:
When the order to open fire is given, the AT AI will instantly fire the weapon in his hands at a target suitable for that weapon.
If the AI has rifle in hands at that moment, he will fire the rifle on the infantry. This typically leads to the detection of the players group by the armoured vehicle, then death.

EXP:
When the order to open fire is given, the AT AI should attack the target he has been ordered to attack. If required, he will switch weapons to one appropriate for the assigned target.