Captain Jolene "Jo" Jackson is probably the toughest girl you'll ever meet. She carries around a gun everywhere she goes. She's trained in many different kinds of martial arts and, she has one of the deadliest weapons known to man. Charm. Captain Jake Jensen is the opposite of Jo. He's tough, but he's more like nerd tough. When he talks, he doesn't know when to shut up, he can annoy just about anyone and he is incredibly awkward under pressure. Jo and Jensen are complete opposites, but you know the old saying. Opposites attract.