A fan waves a flag of Russia before the quarterfinal round of the men’s hockey game between Norway and the team from Russia at the 2018 Winter Olympics in Gangneung, South Korea, Wednesday, Feb. 21, 2018. (AP Photo/Jae C. Hong, File)
In this Feb. 14, 2018, file photo, members of the North Korean delegation wave flags at the women’s slalom at Yongpyong alpine center at the 2018 Winter Olympics in Pyeongchang, South Korea. While in South Korea, the North Koreans wear the same uniforms, move together whenever possible and operate as a tightly knit team. (AP Photo/Christophe Ena, File)
PYEONGCHANG, South Korea — A group of high school students plan to keep their new flags all their lives, as a souvenir of this historic political and Olympic moment that they traveled across their nation to witness.