Party Lines - S1-E16
Continuity mistake: Agent Wells is wearing a green jacket with a black bag. In the next shot, she is wearing an orange jacket with a red bag on her back. (00:36:50)
Continuity mistake: Mike answers the phone with the hoses to breathe and then he doesn't have them anymore. (00:39:45)
Factual error: In the opening scene, Abe Leonard meets with a terrorist leader in what is supposed to be Iraq. However, during their conversation, their breath can be seen, even though Iraq has a hot, dry climate. Even at night, the temperature rarely drops low enough for your breath to condensate, let alone in an urban area during daytime.
Answer: It's a recurring theme on the show. Characters come and go depending on the storyline. General Cochrane, Tyler Richmond, Abe Leonard, etc.