Crews prepare hot air balloons for the Kentucky Derby Festival Great Balloonfest Rush Hour Race at Bowman Field on Friday, April 26, 2024. (Photo by Michael Clevenger/Courier Journal)

A tiger plays in water at a tiger zoo in Chaing Mai, Thailand on March 31, 2021. (Photo by Soe Zeya Tun/Reuters)

Hot-air balloons float over the Oka River during the Russian Sky International Balloon Festival in Ryazan Region, Russia on July 26, 2021. (Photo by Alexander Ryumin/TASS)

A military helicopter flies over people during the Afghan Security Forces Exhibition, at the Darul Aman Palace in Kabul, Afghanistan, Wednesday, March 3, 2021. The three-day military exhibition in Kabul allowed civilians to have a first hand view and take pictures of weaponry used by Afghan Security forces. (Photo by Rahmat Gul/AP Photo)

An Iranian man lights a firework during the Wednesday Fire celebration (Chaharshanbeh Suri in Persian) at a park in Tehran, Iran on March 12, 2024. (Photo by Majid Asgaripour/WANA vie Reuters)

Republic of Korea Air Force's (ROKAF) aerobatic unit “Black Eagles” maneuver their T-50B aircraft as they perform an air show at Clark Air Base on March 03, 2024 in Pampanga, Philippines. The Republic of Korea Air Force's (ROKAF) aerobatic unit “Black Eagles” is in the Philippines to conduct a series of air shows to mark the 75th anniversary of diplomatic relations between the Philippines and South Korea. (Photo by Ezra Acayan/Getty Images)

People walk to the Venezuela Aid Live concert that will play on the Colombian side of the border near the Simon Bolivar International Bridge, from San Antonio del Tachira, Venezuela, Friday, February 22, 2019. (Photo by Rodrigo Abd/AP Photo)

Skeleton involves a person riding a small sled down a frozen track while lying face down. The sport is a more intense form of luge because skeleton competitors leap onto the sled and slide downhill head first. Skeleton athletes can reach up to 80 mph on straightaways, causing forces up to 5g, so the helmet is a critical component for attitude as well as safety.