Clarification: Katrina-Video story ASSOCIATED PRESS WASHINGTON (AP) _ In a March 1 story, The Associated Press reported that federal disaster officials warned President Bush and his homeland security chief before Hurricane Katrina struck that the storm could breach levees in New Orleans, citing confidential video footage of an Aug. 28 briefing among U.S. officials. The Army Corps of Engineers considers a breach a hole developing in a levee rather than an overrun. The story should have made clear that Bush was warned about floodwaters overrunning the levees, rather than the levees breaking. The day before the storm hit, Bush was...