vowed to bring home all Americans and to evacuate Afghans who aided the U.S. war effort.But now, potential threats against Americans from the Islamic State group have forced the military to take even greater security precautions.
Earlier on Sunday, the Pentagon ordered six U.S. commercial airlines to help move evacuees from temporary sites outside of Afghanistan, and the military is said to be considering other "creative ways" to complete evacuations.
U.S. military planes have been executing corkscrew landings, and other aircraft have fired flares upon takeoff, measures used to prevent missile attacks.RELATED: Pentagon to compel commercial airlines to evacuate AfghansKabul's airport, now one of the few ways out of the country for the.