I think that I've encountered an inherent bug in the Doom: The Boardgame game system. As I couldn't get an official response from FFG, i'd like to hear your opinion about it.
Legend:
M = Marine
Z = Zombie
Grey block = Obstacle
Red Line = No line of sight (Obstacle blocking)
Green Line = Apparent line of sight (Obstacle not blocking)
So as you can see in the illustration, if only one of those zombies were on-screen, my marine could have seen zombies 2-4 but currently zombie 2's line of sight is blocked by zombie 1, zombie 3's line of sight is blocked by 2 and etc.
This doesn't seem logically possible as if my marine would have shot zombie 4, it wouldn't just miss but hit zombie 3 instead or something similar. How should this be solved?