I have been informed that Dave Mack, a retired CWO and former AB RCR passed away on 26 August at home in Darwell AB. Additional details are unknown at this time. If anyone can add details, please do so in the comments.
Update: There have been many additions in the comments, thanks for everyone who is filling in the details.
Update: There will be a Celebration of Life Ceremony at 2:00 pm, 1400hrs Friday, Sept 7th. See the comments for more details.