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Exxon Valdez Oil Spill, several California wildfires, the Space Shuttle Columbia disaster, several hurricanes to include Andrew and Katrina, and typhoon relief across the United States and the Pacific region.<unk> Exxon Valdez Oil Spill, several California wildfires, the Space Shuttle Columbia disaster, several hurricanes to include Andrew and Katrina, and typhoon relief across the United States and the Pacific region.