I believe he participated in several sceptics events and gave some interviews, somewhere on the net is a video which I saw, where he says
>> ...
Former Minister of National Defense, Paul Hellyer: Hi, my name is Paul Hellyer. I'm a former Canadian politician, a member of three administrations. I'm the former Minister of National Defense, and rose to the rank of Deputy Prime Minister in the Trudeau Administration.
(...)
When President Bush decided to declare war on terrorism. The war on terrorism . . . terrorism is a terrible thing, but this was a police problem and an intelligence problem. What was wrong with your intelligence? Why didn't you know this was going to happen? You spend billions and billions with spooks all over the world and surely you should have known what was going on. And, so I began to be concerned about that.
And then questions were raised by others. Why did the President just sit in the schoolroom when he heard the news? Why did he not acknowledge that he already knew what was going on? As a former Minister of National Defense, the news came out
. . . why did airplanes fly around for an hour and a half without interceptors being scrambled from Andrews . . . is it Andrews right next to the capitol?
Kyle Hence: Yes, that ís correct.
Former Minister of National Defense, Paul Hellyer: . . . take them with a quick action alert they should have been there in five minutes or ten minutes. If not, as the Minister of National Defense, which in the United States is the Secretary of Defense, I would want to say ìwhy not?î
Kyle Hence: Does it disturb you, or do you have concerns about your neighbors to the south that thereís been no inquiry at a defense level relative to the specific failure to scramble jets?
Former Minister of National Defense, Paul Hellyer: I think the inquiry has been very shallow and superficial. And I would like to see a much tougher more in depth inquiry. The evidence is that some people were allowed to fly out of the United States after the attack when American citizens were not allowed to fly in. And Canadians had the pleasure, I guess in a sense, of the company of tens of thousands, several tens of thousands of them in Canada for a few days, especially in Newfoundland where the people were most gracious in looking after them. But, why were some members of the Bin Laden family allowed to fly out of the United States? And . . . you know . . . just why? Why? Why?
There are so many questions. But, you say, what is going wrong here? Or, was there something going wrong? How much did they actually know? And you get into very deep territory because itís the same kind of thing as we saw with Pearl Harbor. Did the President know, or didnít he know? ... <<
http://www.williambowles.info/911/911_on_the_record.html