I mean the missiles hit the airbase, some of them precisely at the junction of the main runways (i.e. in the middle), but they flew through the airbase, which seemed to float in the air (when I checked with Show Truth on) and exploded physically in the ground directly under the floating airbase, inflicting no damage. I guess, though, that the problem is with my computer or my settings. But I'll keep checking. If nothing else works, I can play through the two remaining missions with the single mission option. Adding them to the mission pack was an excellent idea
Miika