is an amount of water that no one has seen in the mississippi in generations. there's so much water here that it's pushing flood control systems to their limits all up and down the mississippi. i had an exclusive interview with a man in charge of that system, and he tells me about a grave decision he had to make early on in in flood and why he had to make this decision again before this is over. levees blown up, flooding 130,000 acres of rich missouri farmland and this is the man who gave the order, but the army corps of engineers major michael walsh now finds his decision questioned and misunderstood. >> in a sense are you playing god here, deciding who gets flooded and who doesn't? >> no, i don't believe that. i don't believe that. walsh's order to blow the levees did prevent record floodwaters from overtopping levees at illinois. now we find that that was just