"The Sept. 11 attacks killed thousands of people across three American states and ushered in decades of counterterror and counterinsurgency operations across the Middle East, defining American national security policy for a generation of Americans. Hundreds of thousands of American men and women deployed to the Middle East in response, and thousands were killed in combat operations. The Sept. 11 attacks must never be forgotten, and we should honor the efforts of the American military, law enforcement, and intelligence community to prevent another such attack from happening again." - @WilsonCBeaver is a senior policy advisor in the Center for National Security.