Question: Which air transport operations hub was commanded by the most recent serial killer profiled in the book Cold North Killers: Canadian Serial Murder?

Related documents: [0]  [DOC] David Russell Williams (born March 7, 1963) is an English-born Canadian, convicted murderer, rapist, and former Colonel in the Canadian Forces. From July 2009 until his arrest in February 2010, he commanded CFB Trenton, a hub for air transport operations in Canada and abroad and the country's largest military airbase. Williams was also a decorated military pilot who had flown Canadian Forces VIP aircraft for dignitaries such as Queen Elizabeth II, Prince Philip, and the Governor General and Prime Minister of Canada. [END] 
[1]  [DOC] Cold North Killers: Canadian Serial Murder is a 2012 Canadian non-fiction book written by Lee Mellor and published by Dundurn Press. It documents the lives of sixty Canadian serial killers, with the earliest being Edward H. Rulloff and the most recent being Russell Williams. The book uses Katherine Ramsland's interpretation of what constitutes a serial killer—someone who has killed at least two people on two separate occasions, and who attempted to or likely would have killed again—as outlined in her 2007 book "The Human Predator". "Cold North Killer's" own definition of what constitutes a Canadian serial killer includes both Canadians who committed murder abroad (such as Keith Hunter Jesperson and Gordon Stewart Northcott) and non-Canadians who committed murder in Canada (like William Dean Christenson and Earle Nelson). [END]  
Answer: CFB Trenton
CFB Trenton