PLEASE NOTE: THIS EDIT CONTAINS MATERIAL WHICH WAS ORIGINALLY 4:3br br Images that have haunted thousands - the aftermath of the 911 attacks.br br Financial firm Cantor Fitzgerald lost more than half its employees and CEO Howard Lutnick became a well-known face.br br Now filmmaker Danielle Gardner whose brother worked for Cantor Fitzgerald, has made a documentary film about the company.br br SOUNDBITE: Danielle Gardner, director, "Out of the Clear Blue Sky", saying (English):br br "I would say the film was both therapeutic and very painful. I think it gave me a lot of purpose. It let me explore and learn about September 11th, which I think I really needed."br br Lutnick, who faced criticism in the media for not adequately taking care of his employees' families, also lost a brother on 911.br br SOUNDBITE: Howard Lutnick, chairman and CEO, Cantor Fitzgerald, saying (English):br br "The most difficult thing was going back. Putting myself back into that experience.