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a_chenFrom the links provided within the article, relevant information about Hurricane Katrina can be viewed with the commentary and archival articles that published in The New York Times that written by other authors.
Also the author has made in contact with Memorial Medical Center in Uptown New Orleans to focus on the investigation into the detail situations happened with the floodwaters. Afterwards, gained more information on the lethal injection issues.
[http://www.nytimes.com/topic/subject/hurricane-katrina?inline=nyt-class…]
[http://www.nytimes.com/topic/subject/hurricanes-and-tropical-storms-hur…]