About This Lesson
On September 11, 2001 nineteen terrorists checked in for flights, boarded four planes and then hijacked them. The use of our own air travel system to attack the United States was a shock to Americans and led to big questions about the effectiveness of airport security checks that allowed these men to board airplanes with small hand weapons and tear gas. Airport security immediately changed in an effort to make air travel safer, but have these changes really made us safer? Listen to learn about the ways security has changed since 9/11 and ways it can continue to improve.
