At the C.S.A.'s close session regarding Gadget's death, he called forward Maria Hill as a witness to prove Director Stark's instability.
He later informed the Mandarin that Stark was still in Omaha, despite the investigation being formally closed.
Soon after Maya Hansen told him about her suspects about Borjigin, Jack confessed everything to Iron Man and Leonard Samson.
Then, he traveled to the Kachin state in Burma, where he met his old friend Xang, asking to help him killing the Mandarin.
After he agreed, he was transported by Buck Richlen somewhere near Tem Borjigin's summer residence in Tianjin, China. He tried to sneak out and kill him, but was caught and decapitated on the spot.