Lt. Gen. Robert B. Flowers was addressing leaders emeritus at USACE Headquarters when he was passed a note with news of the World Trade Center attack. He quickly ended the meeting and went to the USACE Operations Center to contact the Army Operations Center. Flowers, Chief of Engineers and the public face of USACE, appeared on 60 Minutes in November 2001. He detailed how the Corps’ research in constructing blast resistant structures used in renovations of the Pentagon contributed to the building’s resilience.