Newfs are used in coastal water rescue in the Western Mediterranean Sea area. France, Italy, Algeria, and a little in Spain can find Newfs hard at work as Life Guards. The label "Coast Guard" has very different meanings depending on which side of the Atlantic you are on and on the western end of the pond, our Coast Guard units in the US and Canada are definitely hampered in their rescue abilities by being "Newfless". (At least from Tsunami's point of view.)
Full scope Search and Rescue expands their inate abilities to include Wilderness Air Scent Search, Tracking/Trailing, and Forensic applications on both land and water. This incorporates first finding the person needing rescue and then, in many case, actively assisting in the rescue itself.