CHARLESTON, S.C. — The looming shutdown of the federal government includes the National Parks Service, which could mean festivities starting this weekend commemorating the start of the Civil War with the attack on Fort Sumter could happen without Fort Sumter.

The threat of a shutdown also has schools rethinking trips to the nation's capital, where the Smithsonian and the National Zoo would be among the first to close, and campers watching to see whether Yosemite and other parks are closed.

Events for the 150th anniversary of the start of the Civil War have been planned for years.

Jeff Antley, who is coordinating arrangements for an estimated 1,000 re-enactors coming to South Carolina for the weekend says they can't reschedule the events because money has already been spent and travel arrangements have been made.