U.S. Attorney General Eric Holder speaks during a news conference announcing the indictment of six more New Orleans Police officers in the Danziger Bridge shooting and cover-up in the aftermath of Hurricane Katrina, Tuesday, July 13, 2010, at the Hale Boggs Federal Building in New Orleans. U.S. Attorney Jim Letten, is seen at right. (AP Photo/The Times-Picayune, Michael DeMocker)

Photo by: MICHAEL DeMOCKER

U.S. Attorney General Eric Holder speaks during a news conference announcing the indictment of six more New Orleans Police officers in the Danziger Bridge shooting and cover-up in the aftermath of Hurricane Katrina, Tuesday, July 13, 2010, at the Hale Boggs Federal Building in New Orleans. U.S. Attorney Jim Letten, is seen at right. (AP Photo/The Times-Picayune, Michael DeMocker)