This booklet has been published to reflect the experiences of the dedicated men and women of Transport Canada during the four days when Canadian airspace was either completely or partially closed following the tragic events of September 11, 2001, in the United States.

Many Transport Canada employees worked night and day during those four days, and long hours throughout the following weeks and months, to respond to the crisis. This booklet records some of their reflections about those four days. It is not intended to provide a comprehensive account of the crisis, but simply to remind us of their professionalism and dedication during a difficult and momentous time.