Guards stand at a checkpoint near burning oil fields in Qayara, south of Mosul, Iraq, Tuesday, Nov. 22, 2016. For months, residents of the Iraqi town of Qayara have lived in the darkness from a cloud of toxic fumes released by oil fields lit by retreating Islamic State fighters. (AP Photo/Felipe Dana) Photo: Felipe Dana, STF / Copyright 2016 The Associated Press. All rights reserved.