Hurricane Katrina, D'Iberville, Miss., February 4, 2006 -- FEMA Mitigation representatives describe Integrated Concrete Forms (ICF) construction at the Mitigation Modular Expo in D'Iberville. ICF is a melding of concrete, reinforcement, and Styrofoam to form a very effective barrier to effects of flood, storm surge and wind disasters. Darby Duffin/FEMA

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