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![Visitors view Korean Air's booth showcasing the Supernal S-A2 Advanced Air Mobility model at the 2025 World Smart City Expo at Bexco Exhibition Hall 1 in Haeundae-gu, Busan, on July 15. [YONHAP]](https://image.koreajoongangdaily.com/11905673.jpg?imageId=11905673&width=240&height=184&format=webp&format=jpg)