Well to copy Limpopo, night SAR callout on New year's Eve from RAF Lossiemouth to Ben Nevis many, many years ago in a Sea King. Going down the Great Glen with 100kts IAS the groundspeed dropped to zero at one point. Fortunately I was only an enthusiastic junior co-pilot at the time so had no concept of my own mortality. Not sure what the rest of the more experienced crew thought.
As I sit in my comfy chair watching Coronation Street with a beer in my hand, I actually don't really miss that sort of trip.
Must have been something about Lossie in the 80's.