David told me about some of these stories, and I ran across some of them today and decided to stick them all together. NPR : Reporters Give Voice to Post-Katrina Desperation Others are also pressing senior public figures for specific answers. On National Public Radio Thursday afternoon, Robert Siegel questioned Homeland Security Secretary Michael Chertoff about the dire conditions for thousands of people who were not allowed into the New Orleans Superdome but were directed instead to the city’s convention center. Chertoff said aid workers were confronted by a “double catastrophe” – a hurricane followed by a flood that complicated…