Firefighters and other first responders attended a ceremony on the steps of the state Capitol in Bismarck on Monday honoring the New York Fire Department firefighters who perished in the Sept. 11, 2001 terrorist attacks at the World Trade Center towers. After the ceremony, more than 85 first responders from across state participated in the annual North Dakota 9/11 Memorial Stair Climb by walking up the 18 flights of stairs of the Capitol tower.