(SANAA, YEMEN) — U.S operation forces took part in a rescue mission that freed eight hostages in a remote corner of Yemen, but a Yemeni official said Wednesday that it did not liberate five others, including an American journalist and a Briton who were moved elsewhere by their al-Qaida captors days before the raid. Eight hostages — including a Saudi— were liberated in the joint U.S.-Yemeni operation, a rare instance of American forces intervening on the ground in Yemen.