Federal forest officials say an 18-year-old firefighter in California has died after being struck by a tree. Andrew Jackson Palmer was fatally injured yesterday while working on the Eagle Fire near Junction City, California. A U.S. Forest spokesman says Palmer died while en route to hospital on a U.S. Coast Guard medivac helicopter. Palmer was a firefighter from Olympic National Park based in Port Angeles, Washington. The Forest Service and the Occupational Safety and Health Administration are investigating his death. The Eagle fire is one of more than 2,000 fires ignited during a massive lightening storm June 21.