iraqi forces battle isis for control. taking place as american trained iraqi units are under scrutiny for brutality. abc s brian ross has details. reporter: this video shows two unarmed iraqi civilians pleading for their lives, begging not isis but the very forces the u.s. is counting on to stop isis. the video slowed down, shows men with u.s. supplied weapons. this freeze-frame catches a soldier with insignia of the iraqi special forces. they watch the but do not stop as two villagers are killed and then the gunmen opened fire on the pile of body. the disturbing video is one of dozens of such images discovered by abc news on social media sites connected to elite units of the iraqi army and the militias who fight alongside them. what we are seeing here is a brazen, proud, display of the terrible crimes. reporter: in this video of a prisoner being tortured u.s. supplied weapons can be seen in the background. other images show men in what appear to be iraqi army uniforms celebratin
reporter: this video shows two unarmed iraqi civilians pleading for their lives, begging not isis but the very forces the u.s. is counting on to stop isis. the video slowed down, shows men with u.s. supplied weapons. this freeze-frame catches a soldier with insignia of the iraqi special forces. they watch the but do not stop as two villagers are killed and then the gunmen opened fire on the pile of body. the disturbing video is one of dozens of such images discovered by abc news on social media sites connected to elite units of the iraqi army and the militias who fight alongside them. what we are seeing here is a brazen, proud, display of the terrible crimes. reporter: in this video of a prisoner being tortured u.s. supplied weapons can be seen in the background. other images show men in what appear to be iraqi army uniforms celebrating right after a civilian has been beheaded.
the incident. chairman of the joint chiefs is concerned of the role iran is placing in isis in iraq. iran is being helpful for now,000. but he worries about what is going to happen once the islamic state fighters are defeated. we are all concerned about what happens after the drums stop beating and isis is defeated and whether the government of iraq will remain on a path to provide an inclusive government for all of the various groups within. in iraq, they were pushing isis fighters from saddam hussein s hometown of tikrit. 84% of the forces are trained and/or equipped by iran. at the boston marathon, officers have been focusing on the death of an officer. reporter: photos show the grisly seen after bombers ambushed the officer inside a squad car killing him. officer down. reporter: for the first time