President Bush is going to game three of baseball's World Series. The White House says he is making the trip to New York to encourage Americans to get on with their lives.

The President will throw out the game's ceremonial first pitch at Yankee Stadium in his biggest public event since the September 11 terrorist attacks.

White House spokesman Ari Fleischer has said the President's appearance at the World Series is an important symbol for Americans to go on with their daily lives.

Meanwhile, 18,000 law enforcement agencies are on heightened alert following a new warning of possible attacks.

"When it comes to the balance of going on with normal lives and with adjusting to a heightened state of security alert, the American people get it," he said. "They do understand that it is possible to do both. They do understand it is possible to go to work every day, to take your children to school every day, to enjoy after-work, after-school activities while knowing that the law enforcement community is on a heightened state of alert," he said.

Vice President Dick Cheney was moved to a "secure location" late Monday because of those warnings. U.S. officials say there is no specific information on the threat, but they believe it is credible given the nature of the intelligence received.