At the Pyeongchang Olympics, most days are very cold and very bright. As the sun moves through the sky, shadows contract and lengthen. Athletes are silhouetted as they trudge to starting lines and soar through the air.

Jan Scherrer, of Switzerland, runs the course during the men's halfpipe qualifying at Phoenix Snow Park at the 2018 Winter Olympics in Pyeongchang, South Korea, Tuesday, Feb. 13, 2018. (AP Photo/Kin Cheung)

Jan Scherrer, of Switzerland, runs the course during the men's halfpipe qualifying at Phoenix Snow Park at the 2018 Winter Olympics in Pyeongchang, South Korea, Tuesday, Feb. 13, 2018. (AP Photo/Kin Cheung)

Wilhelm Denifl, of Austria, walks to the starting gate during training for the men's nordic combined competition at the 2018 Winter Olympics in Pyeongchang, South Korea, Tuesday, Feb. 13, 2018. (AP Photo/Matthias Schrader)

Wilhelm Denifl, of Austria, walks to the starting gate during training for the men's nordic combined competition at the 2018 Winter Olympics in Pyeongchang, South Korea, Tuesday, Feb. 13, 2018. (AP Photo/Matthias Schrader)

A female athlete from China is silhouetted against the reflection of a spotlight on the ice during the women's 500 meters speedskating practice session at the Gangneung Oval at the 2018 Winter Olympics in Gangneung, South Korea, Saturday, Feb. 17, 2018. (AP Photo/John Locher)

A female athlete from China is silhouetted against the reflection of a spotlight on the ice during the women's 500 meters speedskating practice session at the Gangneung Oval at the 2018 Winter Olympics in Gangneung, South Korea, Saturday, Feb. 17, 2018. (AP Photo/John Locher)

Christian Nummedal, of Norway, jumps during the men's slopestyle qualifying at Phoenix Snow Park at the 2018 Winter Olympics in Pyeongchang, South Korea, Sunday, Feb. 18, 2018. (AP Photo/Kin Cheung)

Christian Nummedal, of Norway, jumps during the men's slopestyle qualifying at Phoenix Snow Park at the 2018 Winter Olympics in Pyeongchang, South Korea, Sunday, Feb. 18, 2018. (AP Photo/Kin Cheung)

Jerome Lymann, of Switzerland, jumps during the men's snowboard cross seeding run at Phoenix Snow Park at the 2018 Winter Olympics in Pyeongchang, South Korea, Thursday, Feb. 15, 2018. (AP Photo/Gregory Bull)

Jerome Lymann, of Switzerland, jumps during the men's snowboard cross seeding run at Phoenix Snow Park at the 2018 Winter Olympics in Pyeongchang, South Korea, Thursday, Feb. 15, 2018. (AP Photo/Gregory Bull)

Spectators arrive for the women's 1,000 meters speedskating race at the Gangneung Oval at the 2018 Winter Olympics in Gangneung, South Korea, Wednesday, Feb. 14, 2018. (AP Photo/John Locher)

Spectators arrive for the women's 1,000 meters speedskating race at the Gangneung Oval at the 2018 Winter Olympics in Gangneung, South Korea, Wednesday, Feb. 14, 2018. (AP Photo/John Locher)

Volunteers are silhouetted through fencing at the Alpensia Biathlon Centre prior to the 2018 Winter Olympics in Pyeongchang, South Korea, Thursday, Feb. 8, 2018. (AP Photo/Andrew Medichini)

Volunteers are silhouetted through fencing at the Alpensia Biathlon Centre prior to the 2018 Winter Olympics in Pyeongchang, South Korea, Thursday, Feb. 8, 2018. (AP Photo/Andrew Medichini)

Poland's Kamil Stoch practices for the men's ski jumping competition in the 2018 Winter Olympics at the Olympic Sliding Centre in Pyeongchang, South Korea, Wednesday, Feb. 7, 2018. (AP Photo/Charlie Riedel)

Poland's Kamil Stoch practices for the men's ski jumping competition in the 2018 Winter Olympics at the Olympic Sliding Centre in Pyeongchang, South Korea, Wednesday, Feb. 7, 2018. (AP Photo/Charlie Riedel)

Laurent Muhlethaler, of France, is silhouetted as he jumps during training for the nordic combined competition at the 2018 Winter Olympics in Pyeongchang, South Korea, Sunday, Feb. 18, 2018. (AP Photo/Dmitri Lovetsky)

Laurent Muhlethaler, of France, is silhouetted as he jumps during training for the nordic combined competition at the 2018 Winter Olympics in Pyeongchang, South Korea, Sunday, Feb. 18, 2018. (AP Photo/Dmitri Lovetsky)

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Jan Scherrer, of Switzerland, runs the course during the men's halfpipe qualifying at Phoenix Snow Park at the 2018 Winter Olympics in Pyeongchang, South Korea, Tuesday, Feb. 13, 2018. (AP Photo/Kin Cheung)

At the Pyeongchang Olympics, most days are very cold and very bright. As the sun moves through the sky, shadows contract and lengthen. Athletes are silhouetted as they trudge to starting lines and soar through the air.

Wilhelm Denifl, of Austria, walks to the starting gate during training for the men's nordic combined competition at the 2018 Winter Olympics in Pyeongchang, South Korea, Tuesday, Feb. 13, 2018. (AP Photo/Matthias Schrader)

Wilhelm Denifl, of Austria, walks to the starting gate during training for the men's nordic combined competition at the 2018 Winter Olympics in Pyeongchang, South Korea, Tuesday, Feb. 13, 2018. (AP Photo/Matthias Schrader)

A female athlete from China is silhouetted against the reflection of a spotlight on the ice during the women's 500 meters speedskating practice session at the Gangneung Oval at the 2018 Winter Olympics in Gangneung, South Korea, Saturday, Feb. 17, 2018. (AP Photo/John Locher)

A female athlete from China is silhouetted against the reflection of a spotlight on the ice during the women's 500 meters speedskating practice session at the Gangneung Oval at the 2018 Winter Olympics in Gangneung, South Korea, Saturday, Feb. 17, 2018. (AP Photo/John Locher)

Christian Nummedal, of Norway, jumps during the men's slopestyle qualifying at Phoenix Snow Park at the 2018 Winter Olympics in Pyeongchang, South Korea, Sunday, Feb. 18, 2018. (AP Photo/Kin Cheung)

Christian Nummedal, of Norway, jumps during the men's slopestyle qualifying at Phoenix Snow Park at the 2018 Winter Olympics in Pyeongchang, South Korea, Sunday, Feb. 18, 2018. (AP Photo/Kin Cheung)

Jerome Lymann, of Switzerland, jumps during the men's snowboard cross seeding run at Phoenix Snow Park at the 2018 Winter Olympics in Pyeongchang, South Korea, Thursday, Feb. 15, 2018. (AP Photo/Gregory Bull)

Jerome Lymann, of Switzerland, jumps during the men's snowboard cross seeding run at Phoenix Snow Park at the 2018 Winter Olympics in Pyeongchang, South Korea, Thursday, Feb. 15, 2018. (AP Photo/Gregory Bull)

Spectators arrive for the women's 1,000 meters speedskating race at the Gangneung Oval at the 2018 Winter Olympics in Gangneung, South Korea, Wednesday, Feb. 14, 2018. (AP Photo/John Locher)

Spectators arrive for the women's 1,000 meters speedskating race at the Gangneung Oval at the 2018 Winter Olympics in Gangneung, South Korea, Wednesday, Feb. 14, 2018. (AP Photo/John Locher)

Volunteers are silhouetted through fencing at the Alpensia Biathlon Centre prior to the 2018 Winter Olympics in Pyeongchang, South Korea, Thursday, Feb. 8, 2018. (AP Photo/Andrew Medichini)

Volunteers are silhouetted through fencing at the Alpensia Biathlon Centre prior to the 2018 Winter Olympics in Pyeongchang, South Korea, Thursday, Feb. 8, 2018. (AP Photo/Andrew Medichini)

Poland's Kamil Stoch practices for the men's ski jumping competition in the 2018 Winter Olympics at the Olympic Sliding Centre in Pyeongchang, South Korea, Wednesday, Feb. 7, 2018. (AP Photo/Charlie Riedel)

Poland's Kamil Stoch practices for the men's ski jumping competition in the 2018 Winter Olympics at the Olympic Sliding Centre in Pyeongchang, South Korea, Wednesday, Feb. 7, 2018. (AP Photo/Charlie Riedel)

Laurent Muhlethaler, of France, is silhouetted as he jumps during training for the nordic combined competition at the 2018 Winter Olympics in Pyeongchang, South Korea, Sunday, Feb. 18, 2018. (AP Photo/Dmitri Lovetsky)

Laurent Muhlethaler, of France, is silhouetted as he jumps during training for the nordic combined competition at the 2018 Winter Olympics in Pyeongchang, South Korea, Sunday, Feb. 18, 2018. (AP Photo/Dmitri Lovetsky)