Jesse and Fiona work together on the episode "Breach of Faith." In this Burn Notice clip, the pair pose as newlyweds and try to get the home address of the person they're after. We get a good idea of Jesse's smarts, as well.
Sam: Hey, look who's not in jail. Pearce: Well, I just got an ear full from Langley about your little stunt. What the hell were you thinking threatening an FBI agent like that? Michael: I didn't threatening him. I asked him questions with a gun in my hand. A gun I have the right to legally carry.