Part 2, 'Perception and Reality'

S1 E2: In Chain of Command’s second episode, the war against extremism continues around the globe. In Iraq, after the American and Iraqi coalition gains control of eastern Mosul, the fight shifts to the city’s west side. Meanwhile, a Marine sergeant prepares to deploy to Afghanistan, and on the Caribbean island of Trinidad, the Muslim community struggles to grapple with the alarming reality of their young people leaving the country to fight for ISIS.