President Bush flew in under the cover of darkness to dine with U.S. forces serving there. It was the first trip ever by an American president to Iraq -- a mission tense with concern about his safety.

"You are defending the American people from danger and we are grateful," Bush told some 600 soldiers who were stunned and delighted by his appearance.

The president's plane -- its lights darkened and windows closed to minimize chances of making it a target -- landed under a crescent moon at Baghdad International Airport (search).

Bush flew in on the plane he most often uses, and White House officials went to extraordinary lengths to keep the trip a secret, fearing its disclosure would prompt terrorist attempts to kill him.

The news of Bush's trip was not released until he was in the air on the way back to the United States. "If this breaks while we're in the air we're turning around," White House communications director Dan Bartlett told reporters on the flight to Baghdad.

Security fears were heightened by an attack last Saturday in which a missile struck a DHL cargo plane, forcing it to make an emergency landing at the airport with its wing aflame.

Bush spent only about two hours on the ground, limiting his visit to the airport dinner with U.S. forces. The troops had been told that the VIP guests would be L. Paul Bremer, the U.S. administrator in Iraq, and Lt. Gen. Ricardo Sanchez, commander of coalition forces in Iraq.

In a ruse staged in the name of security, the White House had put out word that Bush would be spending Thanksgiving at his ranch in Crawford, Texas, with his wife, Laura, his parents and other family members. Even the dinner menu was announced.