Johan Galtung introduced me to Graeme at a 2011 TRANSCEND symposium in North Carolina.  9/11 was not on the formal agenda, but came up in side conversations as the 10-year anniversary approached.  Galtung has always promoted open dialog on challenging topics, bucking the penchant of academic institutions and major media platforms to ignore dissenting views on 9/11 and dismiss them as crazy conspiracy theories.