Danielle Gardner’s documentaryOut of the Clear Blue Sky,” a behind-the-scenes story of Cantor Fitzgerald in the aftermath of the Sept. 11 attacks, has been set for release on Sept. 6 by specialty distributor Area23a.

The film will open in New York with additional markets to follow. The release will be accompanied by a series of panel discussions on the long-term effects and ramifications of the attacks.

A total of 658 Cantor Fitzgerald employees perished in the terrorist attacks on the World Trade Center — more casualties than any other organization. Ronnie Schieb gave the film a positive review at DocuWeeks for Variety: “Mainly focusing on Cantor’s CEO, Howard Lutnick, whose teary reaction made him first a favorite of the press and then its chosen villain, Danielle Gardner’s docu tracks the changing dynamics of the firm’s de facto family.”

SEE MORE: Film Review: ‘Out of the Clear Blue Sky’

The film was shown at the Palm Springs International Film Festival in January.

Area23a titles include “Revenge of the Electric Car,” “Best Worst Movie”  and Adrian Grenier’s “Teenage Paparazzo.”