Sky Fighters (Les Chevaliers du ciel, literal translation The Knights of the sky) is a 2005 French film directed by Gérard Pirès (Taxi) about two air force pilots preventing a terrorist attack on the Bastille Day celebrations in Paris. It is based on Tanguy et Laverdure, a comics series by Jean-Michel Charlier and Albert Uderzo which was also made into a hugely successful TV series from 1967 to 1969 making Tanguy and Laverdure, the two main heroes, part of French popular culture.
Les Chevaliers du Ciel was filmed in co-operation with the French Air Force. Initially the standard safety rules applied, but eventually the minimum allowed altitude was reduced to 3 m (10 ft) and the minimum distance between aircraft was reduced to 1 m (3 ft). The filming of these flight sequences seen in the movie were mainly done from the air, as opposed to Top Gun where most of the filming was done from the ground.
To achieve this, one of the Mirage's external fuel tanks was modified to fit a camera. A HD camera was considered for this purpose, but it did not fit in the fuel pod. Tracking shots were done from a hired Lear Jet.
Additionally, jet aircraft are not allowed to fly over Paris. As a result of this, all the Paris filming had to be done on the actual Bastille Day (14 July) for which the filming crew got special permission.