JC's spying on Joey at his doorman job again, as Bench wonders who the other woman is. He thinks a bank robber and a cheat is unlikely to be a heartwarming story. And he asks JC if he thinks Joey's targeting one of the women. JC thinks he could be, but the only way to find out is to get closer to Joey, but it won't be easy: These guys are organized and ultra-cautious so it won't be easy to make contact. A cab pulls up then, and Joey leans in and takes an envelope of cash. JC notices the cabbie was also at the bank, and sends the cab number -- 5V80 if it matters to anyone -- over to Bench to run a check.
At the Library later, Bench fills JC in: The cab driver's name is Willis, and he's also an ex-soldier in the 107th. And he's also a bank robber. Bench hacked the taxi company website and determined Willis stopped at a Coney Island bar called the Green Zone before stopping to give Joey money. The bar is owned by former Master Sgt. and Gulf War veteran Sam Latimer. JC figures it's the ringleader, and he wants to get close to him, and to join the gang. So he needs Bench to give him a cover story and create a vacancy in the bank robbery club. Bench is all about spoiling his new baby boy rotten, so he's on all of those things.
We can only assume it's all been taken care of, since next thing we know JC's showing up at the Green Zone asking for Latimer. The bartender -- Ruben Santiago-Hudson, whom you might recognize as Beckett's former boss on Castle -- is Latimer, turns out, and JC's got a good backstory about being told to find him if he ever needed money. He even has a Marine buddy who supposedly suggested he seek out Latimer, and it's someone Latimer remembers. And someone dead, so Latimer can't check out the story. Phew. JC pretends he's on the run from someone he was working for in Tijuana, and then he doesn't have to pretend when he tells Latimer he's got skills and points out all the hidden guns that JC can get to before Latimer can. Latimer plays tough, and says he won't work with a man whose only reference is a dead Marine. But then he laughs, pours JC a drink, and says there are no job openings at the moment but he'll call around.
Bench is busy creating a job opening for JC at the moment, though. He's in Willis's taxicab. When he leaves, he plants weapons in the trunk and apparently has called it in to police. They show up as Bench limps away, and Willis gets arrested for the crazy arsenal in his trunk.