Former Canadian Minister of Defense: Four alien races have visited Earth for thousands of years

From April 29, 2013 to May 3, 2013 researchers, activists, political leaders, and former members of military services and government agencies representing ten countries gave testimony at the Citizen Hearing on Disclosure in Washington, D.C. to six former members of the United States Congress on the evidence of an extraterrestrial presence engaging the human race.

In this video, the Hon. Paul Hellyer, former Minister of Canada's National Defense testified to "knowing of 4 alien races actively visiting Earth since thousands of years."