NTSB's job is to 'prevent next tragedy', chair says

Homendy stresses that overall the aviation system in the US is very safe. "That's why we're here - to prevent the next tragedy. "Our recommendations must be implemented, or we'll be here again." She says "two runways were operational, two were closed" at the time of the crash, adding that investigators are yet to get access to the aircraft. The recovery operation is continuing, Homendy says, adding that "it's going to take time" but the authorities are hoping t