A thoughtful approach to public safety

A friend reports from the Algarve (the northern Portuguese coast):

At the westernmost point of Europe, fishermen sit at the edge of the cliffs across the bay and cast their rods into the waters below. While we were here, a marine policeman came around and administered breathalyzer tests to the fisherman. Apparently, after a morning of fishing, they have lunch out on the cliffs, often with wine. Sometimes, they have a bit too much, and someone will get tipsy and topple over the cliff edge! Then, the coast guard helicopters have to be called in for a search and rescue. Much better to prevent it!