A Japanese woman, covered with a blanket, who showed symptoms of flu on a Northwest Airlines flight that arrived at Narita International Airport in Narita, east of Tokyo, Thursday afternoon, April 30, 2009, is escorted to a waiting ambulance by quarantine officers. The woman, who would be Japan's first confirmed case of swine flu if confirmed, is currently being tested, and the results will be available early Friday morning, according to a health official at the airport.