I have a normal S-300 site that i set up by hand. Even after setting "Engage Air Weapons" to FALSE in the unit options it still shoots down incoming GB-6s and CM-802AKGs. I have not tested it with any other airframes as the Jeff is the only modern fighter i own. The site has no other options other then "Engage Air Weapons" to FALSE. The S-300 will not shoot down LD-10s