In Our Sights

S1 E5: PJ returns to Syria, inspired by Levi's sacrifice and intent on reaching ISIS' "capital," Raqqa. In Iraq, ISIS is losing ground in Mosul but stages a diversionary attack in the city of Kirkuk, where Italian volunteer Alex leads his men into battle against them. Meanwhile, Pete reaches a breaking point as casualties stack up in Mosul. There's still a long road ahead and an uncomfortable question persists for the volunteers: who are the real heroes in this fight?