Glass in the control tower on the island does not break. I was trying to shoot bad guys through the glass but it didn't break. I even tried throwing a grenade up the stairs and no breakage except for one tiny crack in the window which didn't give me a vantage point to shoot out of.
I then decided to get the 40 + AI on the runway to shoot at me which when they did I didn't die. It felt like I was behind bullet proof glass
Doors don't blow up with satchels placed or blow open.