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People celebrate at the Oceti Sakowin camp after it was announced that the U.S. Army Corps of Engineers won't grant easement for t Dan Nanamkin, of the Colville Nez Perce Native American tribe in Nespelem, Wash., right, drums with a procession through the Oceti A Native American drum procession moves through the Oceti Sakowin camp after it was announced that the U.S. Army Corps of Engineer Members of a Native American drum procession celebrate at the Oceti Sakowin camp after it was announced that the U.S. Army Corps o Army veteran Nick Biernacki, of Indiana, prays at the Cannonball River at the Oceti Sakowin camp where people have gathered to pro A crowd gathers in celebration at the Oceti Sakowin camp after it was announced that the U.S. Army Corps of Engineers won't grant A group of veterans attend a briefing at the Oceti Sakowin camp where people have gathered to protest the Dakota Access oil pipeli An Army veteran attends a briefing for fellow veterans at the Oceti Sakowin camp where people have gathered to protest the Dakota