2001 – In the U.S., four airliners were hijacked and were intentionally crashed. Two airliners hit the World Trade Center, which collapsed shortly after, in New York City, NY. One airliner hit the Pentagon in Arlington, VA. Another airliner crashed into a field in Pennsylvania. About 3,000 people were killed.
then in 2012 – Terrorists attacked the U.S. consulate in Benghazi, Libya. Four Americans were brutally murdered and ten others were injured.