You’re listening to The Exchange, on Siouxland Public Media. I’m Mary Hartnett. The language of the Omaha Tribe is in crisis. There are fewer than a dozen native speakers left. However, a Nebraska filmmaker has produced a new documentary called “The Omaha Speaking.” Timmerman has been working in partnership with Omaha tribal elders and sisters Octa Keen, Winona Caramony, and Glenna Slater. 85 year old Glenna teaches at the Nebraska Indian Community College. I spoke with Timmerman and Glenna this week when they were in Sioux City for an event.