This is video released from the US Coast Guard post Hurricane Gustav. The description reads:
In this video released by the U.S. Coast Guard, helicopter crews from Air Station New Orleans fly over the greater New Orleans area to assess impact to the infrastructure after Hurricane Gustav passed through the area Sunday, Sept. 1, 2008. In the portion of video viewing the Industrial Canal there is footage of two breakaway barges and a ship that came unanchored and floated quickly down the canal.
More great videos from the US Coast Guard can be found the USCGImagery Channel of YouTube HERE.