Smoke pours from the twin towers of the World Trade Center after they were hit by two hijacked airliners in a terrorist attack Sept. 11, 2001 in New York. (Photo by Robert Giroux/Getty Images) â??Terrorism in 2026 looks very different than it did 25 years ago when the Twin Towers fell on 9/11. While the United States has not seen an attack on that scale since then, the risks have become more varied and complex. Now, fighting terror is police focusing on the havoc a lone gunman can wreak in Times Square, a Boko Haram commander discussing how AI can...