The other PDFs on DHS' page tell me this is for disaster monitoring, and Popular Science has informative post-disaster articles. https://www.google.com/search?

The other PDFs on DHS' page tell me this is for disaster monitoring, and Popular Science has informative post-disaster articles. https://www.google.com/search?hl=en&q=japan+tsunami+site%3Awww.popsci.com https://www.google.com/search?hl=en&q=japan+tsunami+site...