Investigators find cockpit voice recorder from crashed Air India flight

Investigators recover cockpit voice recorder from crashed Air India flight, a key step in determining cause of the incident that killed at least 270 people. The black box, including cockpit voice recorder and flight data recorder, is crucial in air crash investigations. US and UK teams are aiding the Indian inquiry. Families await DNA test results for identification of victims, as officials continue to piece together details of the tragic accident.