And I mean that quite sincerely.

Via Captain Ed:

One of the consequences of closing American airspace was the denial of landing rights to all inbound international flights. Sliney's decision made it necessary for those flights to return home, or if that could not be safely done, then to find somewhere else to land besides the US. Sliney had no idea if terrorists had more attacks coming from foreign airliners, and his decision was undoubtedly correct, despite the potential risk for the inbound flights.

Guess where a number of those flights went? Canada granted permission for these inbound flights to land despite watching the terrorist attack on the United States. It's not a widely-discussed part of the 9/11 story, but Canada took the risk of bringing those flights into their country without knowing whether the terrorists might strike at their nation as well. No one knew what other operations the terrorists had planned for that day; some could have decided to strike airports when planes taxied to their gates.

The Canadian action took courage and selflessness and it probably saved lives. It's just another reason to be grateful for our northern neighbors despite our occasional political differences.