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Energy Transfer Partners CEO Kelcy Warren poses for a portrait after an Associated Press interview at his office in Dallas on Frid In this Nov. 25, 2016 satellite image taken by DigitalGlobe, a large encampment on the North Dakota grasslands is filled by hundre Sean Ptolomek, of Los Angeles, prays while touching the road leading to the Dakota Access oil pipeline site following a demonstrat A man sits by the Cannon Ball River at the Oceti Sakowin camp where thousands have gathered to protest the Dakota Access oil pipel Phillip Swafford, from left, and David Cook, both of Colorado, sit around a campfire at the Oceti Sakowin camp where thousands hav People sit around a campfire at the Oceti Sakowin camp where thousands have gathered to protest the Dakota Access oil pipeline nea