Dont have pictures of mine, but I think you will get the general idea.
Got a German WWII kit. Will be carrying 2 HPA tanks.
The spare tank will go into the gas mask container(cyclinder above the shovel)
The hooked up tank will run the line out of the bread bag(bag on the right side of the lower back)
Atleast thats the plan. Dont have the full kit yet to test out how practical it is (stuff is stuck at the border).