Gina Ligon, director of the National Counterterrorism Innovation, Technology and Education Center, a Department of Homeland Security Center of Excellence based at the University of Nebraska, joins Newsline with Brigitte Quinn to talk about how terror threats have evolved since 9/11 and the country's approach to security.

PHOTO: Members of the Port Authority Police and the NYPD stand guard on a roof top over looking the ceremonies for the lives lost at 9/11 on Sept. 11, 2023. (David Dee Delgado/Getty Images)