Federal officials warned President Bush and his homeland security chief of possible devastation just before Hurricane Katrina struck. Six days of video footage from briefings and transcripts were obtained by The Associated Press. The warnings were that the storm could breach levees, risk lives in the New Orleans Superdome and overwhelm rescuers.A-P reports Bush didn't ask any questions during the final government-wide briefing the day before Katrina struck on August 29th....read on"