NEW ORLEANS - The U.S. Army Corps of Engineers' negligent failure to properly maintain and operate the Mississippi River-Gulf Outlet (MRGO) was a substantial cause for the fatal breaching of the Reach 2 Levee, causing subsequent catastrophic flooding in the aftermath of Hurricane Katrina, a Louisiana federal judge held Nov. 18 (In Re: Katrina Canal Breaches Consolidated Litigation, No. 05-4182 Section "K"[2], E.D. La.). From Mealey's Litigation Report: Catastrophic Loss