A worker with the Oklahoma City Metro Alliance's Firstep Program removes a load of large metal debris from a 40-acre area southeast of Tinker that was recently cleared of cedar trees. The trees are considered an invasive species and are also highly flammable, putting the area, which is designated as a clear zone around the flightline, in danger. (U.S. Air Force photo/Kelly White)

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Photo by: Kelly White |  VIRIN: 200408-F-RI777-1002.JPG