article_snippet: Iraqi security forces and Shi'ite fighters chant slogans as Iraqi security forces and Shi'ite fighters gather at Udhaim dam, north of Baghdad, ahead of an advance on Islamic State positions Tikrit that is expected to begin today .
article_snippet: A wide view shows Iraqi soldiers and Shiite irregulars massing at the Udhaim dam.
article_snippet: Taking a moment: An Iraqi soldier rests on a wall at the Udhaim dam.
article_snippet: Troops wander the streets around Udhaim dam while Troops wait for the order to attack.