Canadian Forced Helicopter Crew/Flyers Tactical Pants

These pants were hugely useful for me when I was doing work in a woodshop for sculpture- there’s so many pockets, and they are quite resistant to damage. They are short, and they fit a 28 inch waist (Canadian military size 6728). I believe this specific style is vintage 80s/90s, but I may be wrong. Similar styles that are easy to come across today have a different NSN.