After September 11, 2001, a team of elite Delta Force commandos was sent into Afghanistan with an assignment to find and kill Osama bin Laden at Tora Bora -- but that mission failed.

The commander of the Delta Force team has now written a book which tells what he says is the true story of what went wrong. He appeared anonymously on CBS's 60 Minutes on Sunday to summarize that story.

This video is from CBS' 60 Minutes, broadcast October 5, 2008.