DOQQ

This is an amazing Color IR Digital Orthographic Quarter-Quad (DOQQ) overlaid with a thermal mosaic. It is basically a georeferenced and orthorectified aerial photo of the Colina Fire in Riverside County, CA September 10, 2007. By looking closely you can see where four DOQQs have been pieced together to get the entire area and you can also see the outline of the separate thermal image. The USDA Forest Service has this map and many others on their website to illustrate the use of a thermal imaging radiometer. The DOQQs are great because they allow for more accurate measurement of distance, areas, angles and positions which would be critical in a fire fighting situation.

Link to website:
http://www.fireimaging.com/fires/2007/california/colina/253/index.html