Just saw a CBS report showing the usual breached levy in N.O., then another shot of something completely different, a metal gate of sorts, with water spurting through the seams . . . no explanation, just a quick shot, but evidence of another front in the battle you speak of . . .
Did the gates look to be fully closed or partially open?
My guess is they were showing some of the sheet steel pilings; either at the 17th Street Canal (where the water looks to be a couple feet below the top of the temporary "sandbag" repair); or the London Avenue canal.
The sheet steel pilings are temporary devices to keep the canals below the level of lake Pontchartrain.