Asbestos is one of those funny materials.
Unless it's particulate / dust, in a friable state, it's fairly stable, and harmless.
PSPC, and DND have conducted exhaustive inventories of the stuff in all buildings in current portfolio, remediated where required.
Depending on when the buildings referred to were demolished, or removed from inventory, there would have been a DSS survey done. Sadly, lots of them would have been occupied, and removed long before any legislation caught up ( See RCMP facility in Kemptville).
FHG. lots of shacks had it. Unless there was work taking place that turned the materials into dust ( cutting / grinding / sanding etc). Risk would have been minimal, even if a ceiling containing ACM did collapse..