Using extensive footage of the tragic 9/11 terrorist attack on the Pentagon, this program looks at the effects of the attack and its aftermath through first-person accounts of military personnel, first responders, and others who were on the scene. Also provides a look into the minds of survivors and those who lost colleagues and family members on the ground and on Flight 77.

Pentagon adalah gedung departemen pertahanan AS yang berbentuk gedung bersegi lima (bahasa Yunani : Pentagon). Sebagai Pusat keamanan dan pusat dari jaringan militer Amerika Serikat, salah satu gedung paling aman di Amerika Serikat, bahkan di dunia, namun mitos ini tidaklah benar, karena pada 11 September 2001 sebuah pesawat Boeing 757 menabrak salah satu gedung paling terkenal di dunia.