He responds with an apologetic look. He's sorry for being complicated. It's not his fault, a conman ruined his life.

And he nods along to the plan; Kanji has similar speech patterns to Atlas, so Jack is happy to follow his orders. In fact, he's starting to think he might be able to survive tonight. "Lead the way, I'll follow. And... you can have my wrench if I find a gun."

Because it's a better weapon than a chair.