I believe it was the last Army Jr. NCO course before Unification and was held at the Canadian Guards Depot in Petawawa just before it, and all regimental depots, were disbanded. Craig (Mills) is seated in the front row. (Al Ditter)

The dark-haired lady is Helen Mills.

I can place most of the people in the lefthand picture as follows: Wayne Brocklehurst, Gord Graham (I'm pretty sure), unknown, Rosalie Graham (possibly), Steve Gannon and Helen Mills.  Ed Gosden at the controls and Wayne Brocklehurst at the prop

 (Petawawa Airport?) (Thks Al Ditter..from the C. Mills collection)