VIDEO: Houston. The 4th largest city in the United States. Only New York City has more Fortune 500 companies. Houston’s industries include NASA, healthcare and most notably, energy. It’s here in the heart of Big Oil that we found a heart-stopping, adrenaline-pumping, fishery, featuring sight-fishing with fly rods for redfish. Here's a short film showing a day on the water with guide Steve Soule' chasing redfish in the mud and grass flats just outside the Houston city limits in nearby Galveston Bay.