A weekly bagpipe tribute honors those who died on 9/11 as well as those who are sick or who have died from exposure to hazards and toxins in the aftermath of 9/11. Bagpipers play near the 58-ton steel beam known as the Last Column in Foundation Hall from 1 to 1:10 p.m. and perform on the 9/11 Memorial Glade* from 1:15 to 1:30 p.m.

*Weather permitting.