2 Killed in Asiana Crash Were Teens on School Trip Asiana Airlines Flight 214 was carrying more than 300 people when it crashed Saturday at San Francisco International Airport, had its tail torn off, and burst into flames. The crash of the Boeing 777 injured 181 people. The injured were being cared for at several hospitals and at least 22 were in critical condition. SLIDESHOW: Plane Crashes at San Francisco Airport National Transportation Safety Board investigators have recovered the plane's black boxes and they were sent to Washington to be analyzed. NTSB officials said they hoped to interview the crew later today. We went out and looked at the accident aircraft. We have not yet talked to the pilot; we hope to do that in the coming days. But we have obtained the cockpit voice recorder and the flight data recorder, and they have been sent back to our labs in Washington. We hope that there is good data, good information on those, and we'll audition them today back at headquarters," NTSB Chair Deborah Hersman said today on "This Week." The NTSB is working with Boeing, the Federal Aviation Administration, as well as the Korean Air and Accident Investigation Board to investigate the crash. We have a lot of work ahead of us. We have teams that will be looking at aircraft operations, at human performance, survival factors, and we'll be looking at the aircraft. We'll be looking at power plants, systems and structures. And so we really want to make sure we have a good understanding of the facts before we reach any conclusions," Hersman said. FBI Special Agent in Charge David Johnson said Saturday that "at this point in time, there is no indication of terrorism." Asiana President Yoon Young-doo said at news conference today that he didn't believe the crash was caused by mechanical failure or pilot error and that it would take time to find out what caused the crash, The Associated Press reported. A government official involved in the accident investigation told ABC News that so far the airline has been cooperative with the investigation. The first meeting between accident investigators and Asiana was going on this morning, according to this official. Flight 214's Crash Landing Flight 214 originated in Shanghai, China, and had a stopover in Seoul, South Korea. Vedpal Singh, a passenger who was on Asiana Airlines Flight 214, said he broke his collarbone. "The moment it touched the runway there was bang and we we realized something has gone wrong, something terrible has happened," Singh said. Aerials of the crash, provided by ABC's San Francisco station KGO-TV, showed the plane's tail severed from its body, as well as the majority of the aircraft's roof completely charred away. One of the plane's wings appeared to have snapped upon impact. Benjamin Levy, who was on the plane, said he's grateful to be alive. I mean, when I saw the hole in the front of the plane on the roof I wasn't quite sure if it was the fire afterward or if something had happened before. I couldn't tell," Levy said. Crash Survivor Says Announcement Claimed the Plane Had Landed Safely: Read More Plane's Safety Record Read More: Boeing 777 Records First Fatalities in Its 18 Year History