article_snippet.sent: Zahra Billoo, a spokeswoman for the advocacy group, said Zahra Billoo, a spokeswoman for the advocacy group's helping al-Labani's family and the families of other Yemeni-Americans.
article_snippet.sent: CNN's Devon Sayers, Carma Hassan, Jennifer Deaton, Vasco Cotovio, Jason Hanna, Ben Brumfield,
article_snippet.sent: Samira Said and Catherine E. Shoichet contributed to this report.