With the 12th anniversary of 9/11 soon upon us, Indiewire presents the exclusive trailer for the harrowing documentary "Out of the Clear Blue Sky," which examines the tragedy of that day through the prism of bond trading firm Cantor Fitzgerald.

Directed by Danielle Gardner, a September 11th family member, "Out of the Clear Blue Sky" tells the story of Wall Street powerhouse Cantor Fitzgerald and its notorious CEO, Howard Lutnick, who became famous for the worst of all possible reasons; 658 of their employees were missing in the terrorist attacks on the World Trade Center. Though Cantor suffered more casualties than any other organization, their story was soon pushed aside as the media ambushed Lutnick, who went from face-of-the-tragedy to pariah within weeks. A true stranger-than-fiction account, unfolding over months and years, the film captures what it feels like to be caught in the crosshairs of history.

The film will open at the Regal Union Square in New York City on September 6. It debuted at the 2012 DocuWeeks Film Festival to critical acclaim.
It will also sho

w at 7 pm on September 11th in theaters across the nation. To purchase tickets, please visit SkyOnScreen.com.

Watch the trailer below: