PERSONAL CLOAKING DEVICE: When it's not your turn, lines of fire can't be drawn to Iron Man if he occupies hindering terrain or is adjacent to blocking terrain.

I understand that lines of fire can't be drawn when he is in hindering terrain or adjacent to blocking terrain. However, what about walls? In the Rulebook on page #13 under walls:

"Walls have no boundary lines, but they behave like blocking terrain."


QUESTION:

Would this Iron Man's Personal Cloaking Device trait be activated if he were adjacent to a wall?

Walls are a form of blocking terrain.

So yes.