Democrats Want Independent Katrina Probe – Yahoo! News The videotape captured a briefing, one day before Katrina stuck on Aug. 29, involving then- Federal Emergency Management Agency head Michael Brown, President Bush, Homeland Security Secretary Michael Chertoff and other officials. Brown and others warned that the storm could breach levees, endanger lives in the New Orleans Superdome and overwhelm rescuers. Five days after the briefing, with most of New Orleans underwater, Bush said, “I don’t think anybody anticipated the breach of the levees.” White House and Homeland Security officials urged the public not to read too much into the video…