Our challenge in this new century is a different one, ... It's really to defend our nation against the unknown, the uncertain and, what we have to understand, will be the unexpected. That may seem on the face of it an impossible task but it is not.
The task is to keep at it until Americans can go through their lives without fear, ... It is a marathon, not a sprint. It will be years, not weeks or months.
It is our task to see that that doesn't happen,