From the Chapel Hill News article:

“The memorial, which will be located on U.S. 15-501 next to the Chatham County Courthouse, will feature a beam from one of the towers that will be installed in the ground and tilted nine degrees and 11 minutes facing directly toward Ground Zero in New York City.

About 100 people attended the ceremony, which was marked by an Honor Guard, prayers, a moment of silence, Taps and the ringing of the bell, which marks the death of fallen firefighters.”