The events of Sept. 11, 2001, still ring clear in many of our minds — even 21 years after the attacks. But newer generations have little to no memory of that tragic day. Some were too young to remember, others not yet born.

Under The Radar marked the 20th anniversary of 9/11 by reflecting on how Gen-Zers recognize an event that they learn about in history books. How does generational trauma affect those who didn’t live through the event?


Garrett Graff, journalist and historian, whose book “The Only Plane in the Sky,” is the first comprehensive oral history of 9/11. Graff also serves as the director of the Aspen Institute’s cybersecurity and technology program.

Sam Sommers, experimental social psychologist, author and professor at Tufts University.

Dana Rose Garfin, trauma scholar and assistant professor at the University of California, Irvine.