Revealing mistake: The first time we see the raid on the senator's room, 2 security guards are shot in the head. The blood spray from the second one emerges a fraction of a second before the gun fires. The second time the raid is played out, everything happens exactly the same way, but this time the spray matches the gunshot.
Continuity mistake: The flashback to Ahmad Zubair being tortured is different than the video Frank watches in the previous episode, Two Dead Men. For example, in the video, after the masked man stops choking Zubair, he keeps talking in Pashto. But in the flashback, his hands are around Zubair's neck the entire time and then speaks English before having him shot.