DUNSEITH (AP) - The chief executive officer of the International Peace Garden says he hopes ceremonies marking the Sept. 11, 2001, terrorist attacks will help bring freedom from fear.

CEO Doug Hevenor said that is one of the essential human freedoms defined by the late President Franklin D. Roosevelt as a "worldwide reduction of armaments to such a point and in such a thorough fashion that no nation will be in a position to commit an act of physical aggression against any neighbor - anywhere in the world."

The International Peace Garden, where a memorial is made of steel from the World Trade Center, planned a ceremony to include hundreds of children from the U.S. and Canada and a "freedom walk."

The 2,300-acre garden is on the U.S.-Canadian border north of Dunseith.

The keynote speaker at the ceremony was scheduled to be University of North Dakota psychologist Earl Beal, who helped Air Force assistance centers work with families affected by the 2001 terrorist attack on the Pentagon.

"He has a connection to 9/11. He provided support services from Grand Forks to the Pentagon," Hevenor said.

The pain of the terrorist attacks is "a pain that's shared by both Canadians and Americans," Hevenor said. The memorial ceremony and freedom walk are aimed at that pain and fear, he said.

In Grand Forks, the University of North Dakota was planning a campus tribute. Gov. John Hoeven, who joined President Bush in ordering flags at half-staff, was to attend a Transportation Security Administration ceremony at the Fargo airport.