This Oscar-nominated documentary by Rory Kennedy revisits the fall of Saigon in April 1975, when President Richard Nixon called for a total withdrawal of forces. Those old enough to recall that era will, no doubt, have images seared in their brains of the last helicopter leaving the American embassy. What this documentary contains, however, is formerly unseen footage – lots of it – taken on the ship where that helicopter, and other last-ditch escape vehicles, were bound. Check local listings.