This image released by the National Transportation Safety Board Sunday, July 7, 2013, shows NTSB workers near the Boeing 777 Asiana Airlines Flight 214 aircraft. The Asiana flight crash

 

              This image released by the National Transportation Safety Board Sunday, July 7, 2013, shows NTSB workers near the Boeing 777 Asiana Airlines Flight 214 aircraft. The Asiana flight crash
This image released by the National Transportation Safety Board Sunday, July 7, 2013, shows NTSB workers near the Boeing 777 Asiana Airlines Flight 214 aircraft. The Asiana flight crashed upon landing Saturday, July 6, at San Francisco International Airport, and two of the 307 passengers aboard were killed. (AP Photo/NTSB)