From this online CTV article regarding missile defense:
... Paul Cellucci, the country's ambassador here, was saying "we don't get it," as to why Canada doesn't wish to participate in the controversial program.
"If there's a missile incoming, and it's heading toward Canada, you are going to leave it up to the United States to determine what to do about that missile. We don't think that is in Canada's sovereign interest."
Um ... guys, the only way a missile is going to be headed for Canada is if they were aiming for the U.S. and missed.
BONUS TRACK: You know, I'm reminded that the last time Canada got into bed with the U.S. in terms of an aerospace program, it cost us the Avro Arrow. Can we not make that kind of mistake again?