I love the fact that the U.S. Fish and Wildlife Service frequently posts photos of their fire activities on Facebook and Flickr. The first two photos are from a prescribed fire on the McNary National Wildlife Refuge in southern Washington. More photos from that project can be found on Flickr.
The last one is from a black-lining operation in preparation for a prescribed fire on the Southeast Idaho National Wildlife Refuge Complex. I am a big proponent of black-lining. It can be done when conditions are a little too wet for your main burn. And a black line around your project can greatly reduce the amount of time needed for the main burn, while providing an extra margin of safety and reducing the chance of an escape. Black-lining can be done with fewer people than the main burn, and can turn a large 2-day project into a 1-day job, reducing the overall costs.