The victims' families of Asiana Airlines crash get on the bus to Shanghai Pudong Airport, in Quzhou city, east China's Zhejiang Province, July 8, 2013. The victims' families of Asiana Airlines' crash prepared to fly to the US to deal with the aftermath of the crash Monday morning. Photo: Xinhua

The relative of an air crash victim gets on a bus from east China's Jiangshan to Shanghai to catch a plane for the United States, in Jiangshan City, east China's Zhejiang Province, July 8, 2013. Two Chinese passengers Wang Linjia and Ye Mengyuan were killed in a crash landing of an Asiana Airlines Boeing 777 at San Francisco airport on Saturday morning. Their family members headed for the United States on Monday. Photo: Xinhua

Relatives of an air crash victim sees off a bus leaving east China's Jiangshan to Shanghai, in Jiangshan City, east China's Zhejiang Province, July 8, 2013. Two Chinese passengers Wang Linjia and Ye Mengyuan were killed in a crash landing of an Asiana Airlines Boeing 777 at San Francisco airport on Saturday morning. Their family members headed for the United States on Monday. Photo: Xinhua

The relatives of an air crash victim sit on a bus from east China's Jiangshan to Shanghai to catch a plane for the United States, in Jiangshan City, east China's Zhejiang Province, July 8, 2013. Two Chinese passengers Wang Linjia and Ye Mengyuan were killed in a crash landing of an Asiana Airlines Boeing 777 at San Francisco airport on Saturday morning. Their family members headed for the United States on Monday. Photo: Xinhua

The relative of an air crash victim sits on a bus from east China's Jiangshan to Shanghai to catch a plane for the United States, in Jiangshan City, east China's Zhejiang Province, July 8, 2013. Two Chinese passengers, Wang Linjia and Ye Mengyuan, were killed in a crash landing of an Asiana Airlines Boeing 777 at San Francisco airport on Saturday morning. Their family members headed for the United States on Monday. Photo: Xinhua

The relative of an air crash victim sits on a bus from east China's Jiangshan to Shanghai to catch a plane for the United States, in Jiangshan City, east China's Zhejiang Province, July 8, 2013. Two Chinese passengers Wang Linjia and Ye Mengyuan were killed in a crash landing of an Asiana Airlines Boeing 777 at San Francisco airport on Saturday morning. Their family members headed for the United States on Monday. Photo: Xinhua

The relative of a victim in the Asiana Airlines' crash sits on the bus in Quzhou city, east China's Zhejiang Province, July 8, 2013. The victims' families of Asiana Airlines' crash prepared to fly to the US to deal with the aftermath of the crash Monday morning. Photo: Xinhua