At the first season it already turned out to be didappointing, flawed already like a sniper inside a dining room with the drapes fully open, floor to ceiling windows, in full view of everyone? Not to mention he's near the meeting place of the VP, joint chiefs, etc. and area security would have sighted him in a millisecond.
Plus Brody has a bomb vest and gets to go home chauffeured by the security service for sure with his family waiting for him. So how does he hide the vest among all these?
I have no idea how such glaring details escape the producers, director and viewers.