ISIS militants released a graphic video of the beheading of American aid worker Abdul-Rahman Kassig and 18 Syrian prisoners this weekend. The footage was shocking, but also revealed faces and locations of the executioners in a move to incite the US and other Western countries.
Jordan Matson, from Racine, Wisconsin, was once a soldier in the US Army. Today Matson is a volunteer fighter with a Kurdish militia in northern Syria, fighting against ISIS and hoping to bring more Americans over to join the war.