The federal government shutdown means that the tan-hatted park rangers who are historical guides for tourists and provide other services, have been off the job. Park Ranger Jack Henkels looks out over a waterway in Jean Lafitte National Historical Park and Preserve in Marrero, La., Dec. 27, 2005. Environmental changes set in motion by Hurricanes Katrina and Rita are hard to miss in hurricane-ravaged nature parks along the Louisiana coast. Katrina's powerful winds downed thousands of trees, and Rita's tidal surge forced salty seawater from the Gulf of Mexico into freshwater canals and bayous that wind through many parks. (AP Photo/Jacqueline Larma) (Associated Press)
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