Goof: The photo of Tiffy and Ryan that Mack finds in Tiffy's jewelry box is not the same photo that was shown in the opening credits or the same photo that Kim found at the end of season one. The background in the original photo was a window or mirror. The photo that Mack found was against a white wall. It's possible that she had more than one photo, however, it was established in a previous episode that she hid one in the jewelry box.
Goof: In the opening scene, the French translator/undercover operative pushes Jonas in the pool. When Jonas emerges from the water, his shirt is barely wet. Seconds later, his shirt is dry.
Goof: In the hunting cabin, we can see Jonas and Charles with bloody gashes all over their faces and upper body as a result of the explosion. When they meet the wives back in Forth Griffith they all appear fine with no signs of injuries, healed or not.
Jonas Blane: You wanna fight?
Bridgett Sullivan: I joined the Army to fight.
Jonas Blane: You wanna get some, is that it?
Bridgett Sullivan: I wanna do my duty.
Jonas Blane: Well let's give you an opportunity.
(Speaking to President-Elect Benjamin Castillo)
Jonas Blane: Stay alive, I voted for you.
Charles Grey: They're gunna move in fast.
Jonas Blane: Well then somebody say something memorable, because this is our last stand.
President-Elect Benjamin Castillo: Are you a loyal American?
Jonas Blane: Sir that is one thing in my nature, that is not a fault.
Bob Brown: What can't you do?
Bridgett Sullivan: I can't do the funky chicken; that is, I can do it, but only adequately.
Jonas: All things end in judgement.
Mac: An officer sleeps with a shooter's wife and he's executed. That's the Unit code.
United Kingdom: March 18, 2009 on Virgin1
Norway: May 11, 2009 on Viasat 4
Slovakia: April 14, 2010 on JOJ
The Unit celebrates their secret rendezvous in an old warehouse, where they distill a liquid that they refer as to "Moonshine". It is the same name that Steve McQueen gives to the booze he shares with the rest of the prisoners of the Nazi camp in the film 1963's The Great Escape.
When Jonas tells Molly they're "Going to the mattresses". The term refers to an old Mafia saying. In times when Mafia gangs were in a state of war and couldn't live in their homes. The warring parties would stay at safe houses and while there they would sleep on the floor on mattresses. The purpose of doing this was to be low to the ground in case of attack.