As the United States marks the 23rd anniversary of the 9/11 attacks, national security officials emphasize that terrorism remains a persistent and evolving threat. President Joe Biden and Vice President Kamala Harris commemorated the day alongside former President Donald Trump, highlighting the ongoing dangers that future administrations will face. Experts note that the consequences of the Global War on Terrorism have been profound, resulting in significant military and financial tolls, with nearly 7,000 U.S. service members killed and costs potentially exceeding $8 trillion. The recent escalation of violence in the Middle East has further heightened concerns about the potential for terrorist attacks against the U.S. or its forces abroad. FBI Director Christopher Wray warns of an unprecedented level of threats to public safety and national security following recent global events. Meanwhile, scrutiny remains on past U.S. intelligence practices, with claims that the efficacy of enhanced interrogation techniques has been overstated.