A former Canadian defence minister is heading a speaking tour about the alleged cover up of UFOs by world governments.

A crowd of about 400 people attended the "Disclosure Canada Tour" stop at the University of Calgary Saturday, to hear keynote speaker Paul Hellyer. Hellyer served as Canada's defence minister in the 1960s.

Hellyer and the other speakers on the tour want the government to release all the information they have on UFOs.

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