Four years later, we still have ten big questions
On Monday, December 5, the 9-11 Public Discourse Project—a private group formed by 9-11 Commission members after their official mandate lapsed in 2004—held a wrap-up press briefing in Washington, signaling the last gasp of official inquiries into the attacks four years ago. The National Institute of Standards and Technology also recently completed its final report on the twin towers. Already gathering dust are a Federal Emergency Management Agency study, the joint inquiry by Congress, the McKinsey reports on New York City's emergency response, probes by federal inspectors general, and other efforts to resolve the myriad doubts about the hijackings.
Some questions can't be answered: People who lost loved ones will never know exactly how the end came, if it hurt, what the final thoughts and words were. But other questions are more tractable. Here are 10 of them:
