Does the light airdrop Mantlet block LOS as a medium base model would or does it block LOS as an obstacle would based on its modeled height?
I guess this question also applies to fire pit and powder kegs defenses.
None of these are considered models, they are terrain. I can't find any rule where they get to block LOS as if they were a model. If they block LOS as terrain then every defense on a base can be modeled to block the LOS desired by the modeler.