Far fewer people are trapped than previously thought , officials said . Sisters Aziza and Abdul Hamid escape mountain in a helicopter crash . CNN 's John Walsh tracked them down at a makeshift hospital in Zakho . They found out their father , who stayed behind , was safe .
Far fewer Yazidis are trapped than previously feared , officials say . Sisters Aziza and Dunya Hamid escape mountain in a helicopter rescue . CNN 's Ivan Watson tracked them down at a makeshift shelter in Zakho . They found out their father , who stayed behind , was safe .