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A Boeing 777 airplane lies burned on the runway after it crash landed at San Francisco International Airport July 6, 2013 in San Francisco, California. An Asiana Airlines passenger aircraft coming from Seoul, South Korea crashed while landing. There has been at least two casualties reported. (Photo by Ezra Shaw/Getty Images) ( Staff )

Fire crews put out a fire on an Asiana Airlines Boeing 777 that crashed while landing at San Francisco International Airport on Saturday, July 6, 2013. (John Green/Bay Area News Group) ( Staff Photojournalist )

A screenshot of a photo taken by passenger David Eun and posted on the Path social network shortly after Saturday's crash at San Francisco airport.

Asiana Airlines Boeing 777 is engulfed on the tarmac after crash landing at San Francisco International Airport in San Francisco, Calif., on July 6, 2013. (Eugene Anthony Rah via Reuters)i ( USA-CRASH/ASIANA )

Passengers evacuate from Asiana Airlines Boeing 777 aircraft after a crash landing at San Francisco International Airport in San Francisco, Calif. on July 6, 2013. (Eugene Anthony Rah via Reuters)i ( USA-CRASH/ASIANA )

First responders tend to Asiana Airlines flight attendants and rescued passengers as they gather near the runway after flight 214 crash landed at San Francisco International Airport on July 6, 2013. (Eugene Anthony Rah via Reuters)i ( USA-CRASH/ASIANA )

Asiana Airlines flight attendant Kim Ji-yeon, left, stands near a runway with rescued passengers after flight 214 crash landed at San Francisco International Airport on July 6, 2013, in this handout photo provided by passenger Eugene Anthony Rah released to Reuters on July 8, 2013. (Eugene Anthony Rah via Reuters) ( USA-CRASH/ASIANA )

A woman holds her head as a group of people are escorted from the Reflection Room at San Francisco International Airport where officials were helping passengers aboard the Asiana Airlines Flight 214 that crashed during landing Saturday afternoon July 6, 2013. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

Fire crews put out the fire of an Asiana Airlines Boeing 777 that crashed while landing at San Francisco International Airport on Saturday, July 6, 2013. (John Green/Bay Area News Group) ( Staff Photojournalist )

Passengers rest on the tarmac after evacuating Asiana Airlines flight 214 that crash landed at San Francisco International Airport on July 6, 2013. (Eugene Anthony Rah via Reuters)i ( USA-CRASH/ASIANA )

People check out the Asiana Airlines Boeing 777 that crashed while landing at San Francisco International Airport on Saturday, July 6, 2013. (John Green/Bay Area News Group) ( Staff Photojournalist )

This aerial photo shows the wreckage of the Asiana Flight 214 airplane after it crashed at the San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Marcio Jose Sanchez) ( STF )

Unidentified people exit the Reflection Room and were escorted to the terminal boarding area after an Asiana Airlines Boeing 777 arriving from Seoul, South Korea, crashed at the San Francisco International Airport, in San Francisco, Calif. on Saturday July 6, 2013. Reportedly friends and family of the passengers were staying in the Reflection Room while waiting to see their family. (LiPo Ching /Bay Area News Group) ( Staff Photojournalist )

Fire crews put out the fire of an Asiana Airlines Boeing 777 that crashed while landing at San Francisco International Airport on Saturday, July 6, 2013. (John Green/Bay Area News Group) ( Staff Photojournalist )

Vedpal Singh heads to the gate to find his wife after his Asiana Airlines flight 214 from Seoul Korea, crashes at San Francisco International Airport on Saturday July 6, 2013. Singh broke his collarbone and was looking for his wife when he spoke to reporters . (LiPo Ching / Bay Area News Group)

A fire truck sprays water on Asiana Flight 214 after it crashed at San Francisco International Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/Noah Berger) ( FRE )

Vedpal Singh talks to reporters after his Asiana Airlines flight 214 from Seoul Korea, crashes at San Francisco International Airport on Saturday July 6, 2013. Singh broke his collarbone and was looking for his wife when he spoke to reporters . (LiPo Ching / Bay Area News Group)

An Asiana Airlines Boeing 777 is seen on the runway at San Francisco International Airport after crash landing on July 6, 2013. There were no immediate reports of casualties and one apparent survivor tweeted a picture of passengers fleeing the plane. Video footage showed the jet, Flight 214 from Seoul, on its belly surrounded by firefighters. (Josh Edelson/AFP/Getty Images) ( Stringer )

San Francisco Police stand guard at the Reflection Room at San Francisco International Airport where officials are dealing with family and friends of passengers aboard the Asiana Airlines Flight 214 that crashed during landing Saturday afternoon July 6, 2013. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

Fire crews put out the fire of an Asiana Airlines Boeing 777 that crashed while landing at San Francisco International Airport on Saturday, July 6, 2013. (John Green/Bay Area News Group) ( Staff Photojournalist )

Unidentified people exit the Reflection Room and were escorted to the terminal boarding area after an Asiana Airlines Boeing 777 arriving from Seoul, South Korea, crashed at the San Francisco International Airport, in San Francisco, Calif. on Saturday July 6, 2013. Reportedly friends and family of the passengers were staying in the Reflection Room while waiting to see their family. (LiPo Ching /Bay Area News Group) ( Staff Photojournalist )

A patient is taken to the triage tent at San Francisco General Hospital on Saturday, July 6, 2013. Not sure if they were a passenger on the Asiana Airlines Flight 214 that crashed at SFO today.(John Green/Bay Area News Group) ( PLANE CRASH VICTIMS AT SF GENERAL HOSPITAL )

Passengers on the Asiana Airlines Flight 214 that crashed at San Francisco International Airport are treated at San Francisco General Hospital on Saturday, July 6, 2013. (John Green/Bay Area News Group) ( PLANE CRASH VICTIMS AT SF GENERAL HOSPITAL )

Dr. Chris Barton, Chief of Emergency Services at San Francisco General Hospital, speaks to the media about the type of injuries passengers suffered on the Asiana Airlines Flight 214 that crashed at SFO on Saturday, July 6, 2013. (John Green/Bay Area News Group) ( PLANE CRASH VICTIMS AT SF GENERAL HOSPITAL )

Onlookers look at the crashed fuselage of Asiana Airlines Flight 214, a Boeing 777 arriving from Seoul, South Korea, on runway 28L at San Francisco International Airport, San Francisco, Calif. on Saturday July 6, 2013. (LiPo Ching /Bay Area News Group) ( Staff Photojournalist )

Children are escorted from the Reflection Room at San Francisco International Airport after the crash of an Asiana Airlines Being 777 jet at San Francisco International Airport Saturday afternoon July 6, 2013. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

Firemen and investigators examine the wreckage from a Boeing 777 airplane that crashed while landing at San Francisco International Airport July 6, 2013 in San Francisco, California. An Asiana Airlines passenger aircraft coming from Seoul, South Korea crashed while landing. Two fatalities have so far been reported. (Photo by Kimberly White/Getty Images) ( Stringer )

Medical personnel exit the Reflection Room at San Francisco International Airport where officials helped family and friends of passengers aboard the Asiana Airlines Flight 214 that crashed during landing Saturday afternoon July 6, 2013. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

Emergency vehicles are parked alongside jets at San Francisco International Airport on Saturday July 6, 2013, after the crash of an Asiana Airlines jet. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

This aerial photo shows the wreckage of the Asiana Flight 214 airplane after it crashed at the San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Marcio Jose Sanchez) ( STF )

A line of people begin to comb a runway where an Asiana Airlines jet crashed on landing at San Francisco International Airport Saturday afternoon, July 6, 2013. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

From center left, Simnone Deetz and Susan Fengler wait in line for their flight to London at the British Airways International check-in counter after Asiana Airlines Flight 214, arriving from Seoul, South Korea, crashed at San Francisco International Airport (SFO), San Francisco, Calif. on Saturday July 6, 2013. All flights from SFO were delayed after the crash. (LiPo Ching /Bay Area News Group) ( Staff Photojournalist )

A Boeing 777 airplane lies burned on the runway after it crash landed at San Francisco International Airport July 6, 2013 in San Francisco, California. An Asiana Airlines passenger aircraft coming from Seoul, South Korea crashed while landing. There has been at least two casualties reported. (Photo by Ezra Shaw/Getty Images) ( Staff )

San Francisco Fire Chief Joanne Hayes-White, alongside Mayor Ed Lee, SFO Director John Martin holds a press conference to confirm that two people were killed in the plane crash of the Asiana Airlines Flight 214 at San Francisco International Airport on Saturday July 6, 2013. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

A Korean Air jet lands on a runway across from the tail section of an Asiana Airlines jet that crashed earlier in the day at San Francisco International Airport Saturday afternoon, July 6, 2013. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

The wreckage of Asiana Flight 214 rests at San Francisco International Airport after it crashed on Saturday, July 6, 2013, in San Francisco. (AP Photo/Noah Berger) ( FRE )

The remains of a Boeing 777 airplane sits on a tarmac after having crashed while landing at San Francisco International Airport July 6, 2013 in San Francisco, California. A passenger aircraft from Asiana Airlines coming from Seoul, South Korea crashed landed while on it's decent. No word so far on injuries or deaths. (Photo by Kimberly White/Getty Images) ( Stringer )

A Boeing 777 airplane lies burned on the runway after it crash landed at San Francisco International Airport July 6, 2013 in San Francisco, California. An Asiana Airlines passenger aircraft coming from Seoul, South Korea crashed while landing. There has been no official confirmation of casualties. (Photo by Ezra Shaw/Getty Images) ( Staff )

San Francisco Fire Chief Joanne Hayes-White confirms that two people were killed in the plane crash of the Asiana Airlines Flight 214 at San Francisco International Airport on Saturday July 6, 2013. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

The Tail section of crashed Asiana Airlines Flight 214 Boeing 777 arriving from Seoul, South Korea, is seen on runway 28L at San Francisco International Airport, on Saturday July 6, 2013 (LiPo Ching /Bay Area News Group)

People look out over the water toward a Boeing 777 airplane that crashed while landing at San Francisco International Airport July 6, 2013 in San Francisco, California. An Asiana Airlines passenger aircraft coming from Seoul, South Korea crashed while landing, killing two people and injuring scores of others. (Photo by Kimberly White/Getty Images) ( Stringer )

The burnt fuselage of Asiana Airlines Flight 214 sits on the runway at San Francisco International Airport north of its separated tail section Saturday afternoon, July 6, 2013. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

Investigators pass the detached tail and landing gear of Asiana Flight 214 after it crashed at San Francisco International Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/Noah Berger) ( San Francisco Airliner Crash )

A Virgin America flight takes off while a crashed Asiana Airlines Boeing 777 is seen on the runway at San Francisco International Airport on Saturday, July, 06, 2013. At least two people were killed and 130 injured when an Asiana Airlines Boeing 777 jet crashed and caught fire as it landed short of the runway. It was not immediately clear if those people were presumed dead or had left the scene without alerting officials. (Josh Edelson/AFP/Getty Images) ( Stringer )

From center left, Simnone Deetz and Susan Fengler wait in line for their flight to London at the British Airways International check-in counter after Asiana Airlines Flight 214, arriving from Seoul, South Korea, crashed at San Francisco International Airport (SFO), San Francisco, Calif. on Saturday July 6, 2013. All flights from SFO were delayed after the crash. (LiPo Ching /Bay Area News Group) ( Staff Photojournalist )

A close-up of the runway and debris of a Boeing 777 airplane that burned on the runway after it crash landed at San Francisco International Airport July 6, 2013 in San Francisco, California. An Asiana Airlines passenger aircraft coming from Seoul, South Korea crashed while landing. There has been at least two casualties reported. (Photo by Ezra Shaw/Getty Images) ( Staff )

A Boeing 777 airplane lies burned on the runway after it crashed landed at San Francisco International Airport July 6, 2013 in San Francisco, California. passenger aircraft from Asiana Airlines coming from Seoul, South Korea crashed landed while on it's landing decent. (Photo by Justin Sullivan/Getty Images) ( Staff )

San Francisco Fire Chief Joanne Hayes-White confirms that two people were killed in the plane crash of the Asiana Airlines Flight 214 at San Francisco International Airport on Saturday July 6, 2013. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

A Boeing 777 airplane lies burned near the runway after it crash-landed at San Francisco International Airport July 6, 2013 in San Francisco, California. An Asiana Airlines passenger aircraft coming from Seoul, South Korea crashed while landing, killing two people and injuring scores of others. (Photo by Ezra Shaw/Getty Images) ( Staff )

The tail of Asiana Airlines Flight 214, a Boeing 777 arriving from Seoul, South Korea, is seen after the plane crashed on runway 28L at San Francisco International Airport, San Francisco, Calif. on Saturday July 6, 2013. (LiPo Ching /Bay Area News Group) ( Staff Photojournalist )

Ge Gan, of Sunnyvale, waits to visit his friend, who was on the Asiana Airlines Boeing 777 arriving from Seoul, South Korea, that crashed at the San Francisco International Airport, in San Francisco, Calif. on Saturday July 6, 2013. (LiPo Ching /Bay Area News Group) ( Staff Photojournalist )

Personnel combs through a debris field where an Asiana Airlines jet crashed when landing at San Francisco International Airport Saturday, July 6, 2013. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

Ge Gan, of Sunnyvale, talks to reporters about his friend who was on the Asiana Airlines Boeing 777 arriving from Seoul, South Korea, that crashed at the San Francisco International Airport, in San Francisco, Calif. on Saturday July 6, 2013. Gan was outside the Reflection Room waiting to see his friend. (LiPo Ching /Bay Area News Group) ( Staff Photojournalist )

Fire crews put out the fire of an Asiana Airlines Boeing 777 that crashed while landing at San Francisco International Airport on Saturday, July 6, 2013. (John Green/Bay Area News Group) ( Staff Photojournalist )

Passengers wait in line at the British Airways International check-in counter after Asiana Airlines Flight 214, arriving from Seoul, South Korea, crashed at San Francisco International Airport (SFO), San Francisco, Calif. on Saturday July 6, 2013. All flights from SFO were delayed after the crash. (LiPo Ching /Bay Area News Group) ( Staff Photojournalist )

Fire crews put out the fire of an Asiana Airlines Boeing 777 that crashed while landing at San Francisco International Airport on Saturday, July 6, 2013. (John Green/Bay Area News Group) ( Staff Photojournalist )

A Boeing 777 airplane lies burned on the runway after it crash landed at San Francisco International Airport July 6, 2013 in San Francisco, California. An Asiana Airlines passenger aircraft coming from Seoul, South Korea crashed while landing. There has been at least two casualties reported. (Photo by Ezra Shaw/Getty Images) ( Staff )

Fire crews put out the fire of an Asiana Airlines Boeing 777 that crashed while landing at San Francisco International Airport on Saturday, July 6, 2013. (John Green/Bay Area News Group) ( Staff Photojournalist )

A Boeing 777 airplane lies burned on the runway after it crash landed at San Francisco International Airport July 6, 2013 in San Francisco, California. An Asiana Airlines passenger aircraft coming from Seoul, South Korea crashed while landing. There has been at least two casualties reported. (Photo by Ezra Shaw/Getty Images) ( Staff )

Firefighters spray foam on an Asiana Airlines Boeing 777 that crashed at San Francisco International Airport near Milbrae, Calif., Saturday afternoon July 6, 2013. (Karl Mondon/Bay Area News Group) ( Staff Photojournalist )

Fire crews put out the fire of an Asiana Airlines Boeing 777 that crashed while landing at San Francisco International Airport on Saturday, July 6, 2013. (John Green/Bay Area News Group) ( Staff Photojournalist )

The crashed fuselage of Asiana Airlines Flight 214, a Boeing 777 arriving from Seoul, South Korea, is seen on runway 28L at San Francisco International Airport, on Saturday July 6, 2013 (LiPo Ching /Bay Area News Group)

An Asiana Airlines 777 crashed and burned at San Francisco International Airport on Saturday, July 6, 2013. (KGO TV-Channel 7)

This photo provided by Wei Yeh shows what a federal aviation official says was an Asiana Airlines flight crashing while landing at San Francisco airport on Saturday, July 6, 2013. It was not immediately known whether there were any injuries. (AP Photo/Wei Yeh) ( STR )

People watch a news program reporting about Asiana Airlines flight 214 which took off from Seoul and crashed while landing at San Francisco International Airport, at Seoul Railway Station in Seoul, South Korea, Sunday, July 7, 2013. The writing on the screen reads " Local media saying two people died." (AP Photo/Ahn Young-joon) ( South Korea US San Francisco Airliner Crash )

This image courtesy fo CBS affiliate KPIX, shows rescue personnel inspecting debris from an Asiana Airlines Boeing 777 after it crash landed on the runway at San Francisco International Airport on July 6, 2013. (KPIX via AFP/Getty Images) ( 521187038 )

This image courtesy fo CBS affiliate KPIX, shows debris from an Asiana Airlines Boeing 777 after it crash landed on the runway at San Francisco International Airport on July 6, 2013. Video footage showed the jet, Flight 214 from Seoul, on its belly surrounded by firefighters. (KPIX via AFP/Getty Images) ( 521187036 )

A photo taken by John Khoo, of Berkeley, of the Boeing 777 plane that crash landed at San Francisco International Airport in San Francisco, Calif., on Saturday, July 7, 2013. Khoo took the photo from is seat while waiting to takeoff to Europe. (John Khoo) ( n/a )