Patrouille de France of Armée de l'Air et de l'Espace perform at the Kaivopuisto Airshow in Helsinki, Finland, on Aug. 6, 2021. The Kaivopuisto Airshow 2021 was held here on Friday evening. (Photo by Matti Matikainen/Xinhua)

Helicopter NH90 of the Finnish Army Aviation performs at the Kaivopuisto Airshow in Helsinki, Finland, on Aug. 6, 2021. The Kaivopuisto Airshow 2021 was held here on Friday evening. (Photo by Matti Matikainen/Xinhua)

Patrouille de France of Armée de l'Air et de l'Espace perform at the Kaivopuisto Airshow in Helsinki, Finland, on Aug. 6, 2021. The Kaivopuisto Airshow 2021 was held here on Friday evening. (Photo by Matti Matikainen/Xinhua)

Patrouille de France of Armee de l'Air et de l'Espace perform at the Kaivopuisto Airshow in Helsinki, Finland, on Aug. 6, 2021. The Kaivopuisto Airshow 2021 was held here on Friday evening. (Photo by Matti Matikainen/Xinhua)

Patrouille de France of Armée de l'Air et de l'Espace perform at the Kaivopuisto Airshow in Helsinki, Finland, on Aug. 6, 2021. The Kaivopuisto Airshow 2021 was held here on Friday evening. (Photo by Matti Matikainen/Xinhua)

Arctic Eagles perform at the Kaivopuisto Airshow in Helsinki, Finland, on Aug. 6, 2021. The Kaivopuisto Airshow 2021 was held here on Friday evening. (Photo by Matti Matikainen/Xinhua)

Midnight Hawks of the Finnish Air Force perform at the Kaivopuisto Airshow in Helsinki, Finland, on Aug. 6, 2021. The Kaivopuisto Airshow 2021 was held here on Friday evening. (Photo by Matti Matikainen/Xinhua)