Chinese perform near the logo for the Paralympics after the Beijing mayor received the Paralympics flag during the closing ceremony of the 2018 Winter Paralympics in Pyeongchang, South Korea, Sunday, March 18, 2018. (AP Photo/Lee Jin-man)

Volunteer representatives pose for photos in a frame near Paralympians carrying their national flags at the closing ceremony of the 2018 Winter Paralympics in Pyeongchang, South Korea, Sunday, March 18, 2018. Beijing will host the 2022 Winter Paralympics. (AP Photo/Ng Han Guan)

South Korean performers take part in the closing ceremony of the 2018 Winter Paralympics in Pyeongchang, South Korea, Sunday, March 18, 2018. (AP Photo/Lee Jin-man)

Fireworks light up during the closing ceremony of the 2018 Winter Paralympics in Pyeongchang, South Korea, Sunday, March 18, 2018. (AP Photo/Lee Jin-man)

A dancer performs during the closing ceremony of the 2018 Winter Paralympics in Pyeongchang, South Korea, Sunday, March 18, 2018. (AP Photo/Lee Jin-man)

A dancer performs during the closing ceremony of the 2018 Winter Paralympics in Pyeongchang, South Korea, Sunday, March 18, 2018. (AP Photo/Lee Jin-man)

A performer takes part in the closing ceremony of the 2018 Winter Paralympics in Pyeongchang, South Korea, Sunday, March 18, 2018. Beijing will host the 2022 Winter Paralympics. (AP Photo/Ng Han Guan)

A performer takes part in the closing ceremony of the 2018 Winter Paralympics in Pyeongchang, South Korea, Sunday, March 18, 2018. Beijing will host the 2022 Winter Paralympics. (AP Photo/Ng Han Guan)

Performers take part in the closing ceremony of the 2018 Winter Paralympics in Pyeongchang, South Korea, Sunday, March 18, 2018. Beijing will host the 2022 Winter Paralympics. (AP Photo/Ng Han Guan)

South Korean athletes arrive at the closing ceremony of the 2018 Winter Paralympics in Pyeongchang, South Korea, Sunday, March 18, 2018. (AP Photo/Lee Jin-man)

Singer Ailee takes part in the closing ceremony of the 2018 Winter Paralympics in Pyeongchang, South Korea, Sunday, March 18, 2018. (AP Photo/Ng Han Guan)

Singer Ailee at right takes part in the closing ceremony of the 2018 Winter Paralympics in Pyeongchang, South Korea, Sunday, March 18, 2018. (AP Photo/Ng Han Guan)

180318 A dancer during the closing ceremony on day nine of the 2018 Winter Paralympics on March 18, 2018 in Pyeongchang. Photo: Vegard Wivestad Grott / BILDBYRAN / kod VG / 170137 *** 180318 A dancer during the closing ceremony on day nine of the 2018 Winter Paralympics on March 18 2018 in Pyeongchang Photo Vegard Wivestad Cave BILDBYRAN Code VG 170137 PUBLICATIONxNOTxINxDENxNORxSWExFINxAUT Copyright: VEGARDxWIVESTADxGRoTT BB180318BB255

180318 General view of the arena with audience at the stands during the closing ceremony on day nine of the 2018 Winter Paralympics on March 18, 2018 in Pyeongchang. Photo: Vegard Wivestad Grott / BILDBYRAN / kod VG / 170137 *** 180318 General view of the arena with audience at the stands during the closing ceremony on day nine of the 2018 Winter Paralympics on March 18 2018 in Pyeongchang Photo Vegard Wivestad Grott BILDBYRAN Code VG 170137 PUBLICATIONxNOTxINxDENxNORxSWExFINxAUT Copyright: VEGARDxWIVESTADxGRoTT BB180318BB253

180318 Zebastian Modin of Sweden during the closing ceremony on day nine of the 2018 Winter Paralympics on March 18, 2018 in Pyeongchang. Photo: Vegard Wivestad Grott / BILDBYRAN / kod VG / 170137 *** 180318 Zebastian Modin of Sweden during the closing ceremony on day nine of the 2018 Winter Paralympics on March 18 2018 in Pyeongchang Photo Vegard Wivestad Cave BILDBYRAN Code VG 170137 PUBLICATIONxNOTxINxDENxNORxSWExFINxAUT Copyright: VEGARDxWIVESTADxGRoTT BB180318BB245

18 March 2018, South Korea, Pyeongchang: Paralympics, Olympic Stadium. The closing ceremony of the PyeongChang Paralympics. Photo: Jan Woitas/dpa-Zentralbild/dpa

18 March 2018, South Korea, Pyeongchang: Paralympics, Olympic Stadium. The closing ceremony of the PyeongChang Paralympics. Photo: Jan Woitas/dpa-Zentralbild/dpa

18 March 2018, South Korea, Pyeongchang: Paralympics, Olympic Stadium. The various national flags at the closing ceremony. Photo: Jan Woitas/dpa-Zentralbild/dpa

18 March 2018, South Korea, Pyeongchang: Paralympics, Olympic Stadium. The closing ceremony of the PyeongChang Paralympics. Photo: Jan Woitas/dpa-Zentralbild/dpa

18 March 2018, South Korea, Pyeongchang: Paralympics, Olympic Stadium. The closing ceremony of the PyeongChang Paralympics. Photo: Jan Woitas/dpa-Zentralbild/dpa

18 March 2018, South Korea, Pyeongchang: Paralympics, Olympic Stadium. The athletes carrying their national flags in the stadium at the closing ceremony. Photo: Jan Woitas/dpa-Zentralbild/dpa

18 March 2018, South Korea, Pyeongchang: Paralympics, Olympic Stadium. The closing ceremony of the PyeongChang Paralympics. Photo: Jan Woitas/dpa-Zentralbild/dpa

18 March 2018, South Korea, Pyeongchang: Paralympics, Olympic Stadium. The closing ceremony of the PyeongChang Paralympics. Photo: Jan Woitas/dpa-Zentralbild/dpa

18 March 2018, South Korea, Pyeongchang: Paralympics, Olympic Stadium. The closing ceremony of the PyeongChang Paralympics. Photo: Jan Woitas/dpa-Zentralbild/dpa

18 March 2018, South Korea, Pyeongchang: Paralympics, Olympic Stadium. The athletes carrying their national flags in the stadium at the closing ceremony. Photo: Jan Woitas/dpa-Zentralbild/dpa

18 March 2018, South Korea, Pyeongchang: Paralympics, Olympic Stadium. The athletes carrying their national flags in the stadium at the closing ceremony. Photo: Jan Woitas/dpa-Zentralbild/dpa

18 March 2018, South Korea, Pyeongchang: Paralympics, Olympic Stadium. The closing ceremony of the PyeongChang Paralympics. Photo: Jan Woitas/dpa-Zentralbild/dpa

18 March 2018, South Korea, Pyeongchang: Paralympics, Olympic Stadium. The closing ceremony of the PyeongChang Paralympics. Photo: Jan Woitas/dpa-Zentralbild/dpa

18 March 2018, South Korea, Pyeongchang: Paralympics, Olympic Stadium. The athletes carrying their national flags in the stadium at the closing ceremony. Photo: Jan Woitas/dpa-Zentralbild/dpa

18 March 2018, South Korea, Pyeongchang: Paralympics, Olympic Stadium. The closing ceremony of the PyeongChang Paralympics. Photo: Jan Woitas/dpa-Zentralbild/dpa

18 March 2018, South Korea, Pyeongchang: Paralympics, Olympic Stadium. The closing ceremony of the PyeongChang Paralympics. Photo: Jan Woitas/dpa-Zentralbild/dpa