 Fitzsimmons has 25 years of experience working with natural resource issues previous to this position, including previous service at the Interior Department.From 1983 to 1985 he served as a special assistant to the Deputy Director of the National Park Service.From 1985 to 1989 he was the special assistant to the assistant Secretary for Fish and Wildlife and Parks and from 1989 to 1992 the special assistant to the Deputy Under Secretary for Policy, Planning and Development at the Department of Energy.