IIRC from when I was involved in SAR policy, one of the differences between civ and mil SAR was weather limits for training.
While civvy (including CG) SAR can (and do) fly in sh!te weather, they can only (or could - this may be out-of-date) only do so on jobs. Whereas military could train in weather below civvy limits. Net result was that - by regulation and through no fault of their own - civvys were less practiced in real doggo weather.
Maybe somebody more up to date than about 5 years ago could confirm/deny??