In this undated image provided by Jordan Matson, Kurdish fighters and foreign volunteers fighting together against the against the Islamic State group, including American citizen Jordan Matson, second right, Australian citizen volunteer Ase Johnson, right, and British citizen Konstandinos Erik Scurfield, foreground, pose for a group photo in Sinjar, Iraq. Scurfield was shot dead on Monday, March 2, 2015 in Syria, a Kurdish commander said Wednesday. At least one other foreign fighter, Australian Ase Johnson, is known to have been killed fighting alongside the Kurds. (AP Photo courtesy Jordan Matson)