A preliminary investigation into the deadly crash of a Jeju Air Boeing 737 has confirmed the presence of duck DNA and bird debris in both engines, indicating a bird strike shortly before the aircraft went down. The analysis of the black box revealed that the plane received a warning about bird activity just minutes before losing engine power. In response to the tragedy, which resulted in 179 fatalities, South Korea plans to tighten regulations for low-cost carriers and is set to remove concrete barriers near runways deemed hazardous. The government has submitted its initial findings to international aviation authorities and is exploring comprehensive security improvements at airports nationwide.