Ken Burns’ next epic documentary project for PBS is The Vietnam War, which won’t air for another five months. PBS just announced its debut date—the 10-part series airs nightly for two weeks from Sunday through Thursday starting Sept. 17—and released new footage.

For the film, Burns and Lynn Novick co-directed, and they collaborated with Trent Reznor and Atticus Ross, who produced the documentary’s original score. It includes interviews with “nearly 100 witnesses, including many Americans who fought in the war and others who opposed it, as well as Vietnamese combatants and civilians from both the winning and losing sides,” according to PBS.

Here’s two minutes of The Vietnam War:

In a separate preview, below, Novick say the war “remains this kind of unfinished business in American history,” and Burns says, “This film is not an answer, but a set of questions about what happened.”

He calls it “the most ambitious project that we have ever undertaken—PBS is the only place it could have been done.”