Final answer:
The 9/11 Commission was a failure in terms of disaster planning, security systems, and the examination of the president's authority as Commander in Chief.
Step-by-step explanation:
The failure of the 9/11 Commission can be attributed to a lack of coordination in management policies and disaster planning, as well as deficiencies in the security systems of the World Trade Center. While the construction of the Towers played a role in their ultimate collapse, it is not considered a failure of the 9/11 Commission.
One major failure of the Commission was its inability to address the issue of the president's authority as Commander in Chief. The Commission did not thoroughly examine the limitations or challenges faced by the president in responding to the attacks.
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