More over the destruction of different buildings is wildly inconsistent. The title building, air control tower gets destroyed (top part collapses) with one satchel charge placed anywhere in the building or just outside of it. Ok, that's not what I have problem with, well not that much, but the same destruction happens also with

1. around 10 hand grenades thrown in to the building
2. around 10 40 mm rifle grenades shot to the wall
3. around 10 20 mm grenades from helicopter cannons (AH99) shot to the wall.

Then there are buildings that are indestructible which don't look much different from the outside to the buildings that will get destroyed, for example military barracks vs. military HQ.