A South Korean army Apache helicopter fires flares during a celebration to mark 76th anniversary of Korea Armed Forces Day, in Seongnam, South Korea, Tuesday, Oct.1, 2024. (Kim Hong-Ji/Pool Photo via AP)

A quadruped robot marches during a celebration to mark the 76th anniversary of Korea Armed Forces Day in Seongnam, South Korea Tuesday, Oct. 1, 2024. (Kim Hong-Ji/Pool Photo via AP)

Members of South Korean Air Force's honor guards attend a celebration to mark 76th anniversary of Korea Armed Forces Day, in Seongnam, South Korea, Tuesday, Oct.1, 2024. (Kim Hong-Ji/Pool Photo via AP)

South Korean President Yoon Suk Yeol delivers his speech during a celebration to mark the 76th anniversary of Korea Armed Forces Day in Seongnam, South Korea Tuesday, Oct. 1, 2024. (Kim Hong-Ji/Pool Photo via AP)

South Korean special army soldiers parachute down from a plane during the media day for the 76th anniversary of Armed Forces Day at Seoul air base in Seongnam, South Korea, Wednesday, Sept. 25, 2024. (AP Photo/Ahn Young-joon)

U.S. Army soldiers take part in a parade during the 76th Armed Forces Day ceremony in Seoul, South Korea, Tuesday, Oct. 1, 2024. (AP Photo/Ahn Young-joon)

South Korean soldiers salute during the media day for the 76th anniversary of Armed Forces Day at Seoul air base in Seongnam, South Korea, Wednesday, Sept. 25, 2024. (AP Photo/Ahn Young-joon)

Members of the Special Warfare Command give a demonstration of their skills in the traditional Korean martial art of taekwondo during a celebration to mark 76th anniversary of Korea Armed Forces Day, in Seongnam, South Korea, Tuesday, Oct.1, 2024. (Kim Hong-Ji/Pool Photo via AP)

A U.S. Air Force B1 Bomber flies with South Korean Air Force's F-15K fighter jets during a celebration to mark 76th anniversary of Korea Armed Forces Day, in Seongnam, South Korea, Tuesday, Oct.1, 2024. (Kim Hong-Ji/Pool Photo via AP)

Members of the Special Warfare Command parachute as 123-storey skyscraper Lotte World Tower is seen in the background during a celebration to mark 76th anniversary of Korea Armed Forces Day, in Seongnam, South Korea, Tuesday, Oct.1, 2024. (Kim Hong-Ji/Pool Photo via AP)

South Korean soldiers march during the media day for the 76th anniversary of Armed Forces Day at Seoul air base in Seongnam, South Korea, Wednesday, Sept. 25, 2024. (AP Photo/Ahn Young-joon)

South Korean President Yoon Suk Yeol salutes after delivering his speech during a celebration to mark the 76th anniversary of Korea Armed Forces Day in Seongnam, South Korea Tuesday, Oct. 1, 2024. (Kim Hong-Ji/Pool Photo via AP)

South Korean President Yoon Suk Yeol, right, inspects South Korean troops during a celebration to mark the 76th anniversary of Korea Armed Forces Day in Seongnam, South Korea Tuesday, Oct. 1, 2024. (Kim Hong-Ji/Pool Photo via AP)

Cadets march during a celebration to mark 76th anniversary of Korea Armed Forces Day, in Seongnam, South Korea, Tuesday, Oct.1, 2024. (Kim Hong-Ji/Pool Photo via AP)

The Hyunmoo, surface-to-surface missile, march during a celebration to mark 76th anniversary of Korea Armed Forces Day, in Seongnam, South Korea, Tuesday, Oct.1, 2024. (Kim Hong-Ji/Pool Photo via AP)

The Black Eagles, the aerobatic team of T-50 jets belonging to South Korea's Air Force, perform during a celebration to mark 76th anniversary of Korea Armed Forces Day, in Seongnam, South Korea, Tuesday, Oct.1, 2024. (Kim Hong-Ji/Pool Photo via AP)

South Korean President Yoon Suk Yeol, center right, and his wife Kim Keon Hee attend a celebration to mark the 76th anniversary of Korea Armed Forces Day in Seongnam, South Korea Tuesday, Oct. 1, 2024. (Kim Hong-Ji/Pool Photo via AP)

South Korea's missiles are carried in a parade during the 76th Armed Forces Day ceremony in Seoul, South Korea, Tuesday, Oct. 1, 2024. (AP Photo/Ahn Young-joon)

South Korean President Yoon Suk Yeol, center, arrives for a celebration to mark the 76th anniversary of Korea Armed Forces Day in Seongnam, South Korea Tuesday, Oct. 1, 2024. (Kim Hong-Ji/Pool Photo via AP)

South Korean army's K2 tanks take part in a parade during the 76th Armed Forces Day ceremony in Seoul, South Korea, Tuesday, Oct. 1, 2024. (AP Photo/Ahn Young-joon)

South Korea's missiles are carried in a parade during the 76th Armed Forces Day ceremony in Seoul, South Korea, Tuesday, Oct. 1, 2024. (AP Photo/Ahn Young-joon)

South Korean special army soldiers parachute down during the media day for the 76th anniversary of Armed Forces Day at Seoul air base in Seongnam, South Korea, Wednesday, Sept. 25, 2024. (AP Photo/Ahn Young-joon)

South Korea's missiles are paraded during the media day for the 76th anniversary of Armed Forces Day at Seoul air base in Seongnam, South Korea, Wednesday, Sept. 25, 2024. (AP Photo/Ahn Young-joon)

South Korean military helicopters fly over armored vehicles during the media day for the 76th anniversary of Armed Forces Day at Seoul air base in Seongnam, South Korea, Wednesday, Sept. 25, 2024. (AP Photo/Ahn Young-joon)

South Korean mechanized unit personnel parade with their armored vehicles during the media day for the 76th anniversary of Armed Forces Day at Seoul air base in Seongnam, South Korea, Wednesday, Sept. 25, 2024. (AP Photo/Ahn Young-joon)

South Korean army soldiers demonstrate their martial arts skills during the media day for the 76th anniversary of Armed Forces Day at Seoul air base in Seongnam, South Korea, Wednesday, Sept. 25, 2024. (AP Photo/Ahn Young-joon)

South Korea's "Cheongung" missiles are carried in a parade during the 76th Armed Forces Day ceremony in Seoul, South Korea, Tuesday, Oct. 1, 2024. (AP Photo/Ahn Young-joon)

South Korean army soldiers take part in a parade during the 76th Armed Forces Day ceremony in Seoul, South Korea, Tuesday, Oct. 1, 2024. (AP Photo/Ahn Young-joon)