spoke at the riverbank to warn people of the dangers of cooling off in open water. tom ingall reports. yesterday afternoon on the edge of wakefield, an all too familiar tragedy as temperatures soared. a teenage boy sought to cool off in the waters of the air. and calder navigation near broad reach loch. he lost his life. first of all, masks are truly tragic incident. local boy alfred mccraw, 16, just finished his gcses this summer ahead of him. he s been out with a group of friends that have been into the water. alfie got into difficulties. emergency services were called but sadly were able to save him, despite the welcome the waters seem to offer. there s a warning even the strongest of swimmers can quickly get into trouble. there are lots of dangers in not only the cold water shock, but the hidden danger underneath the water and the pollution involved there. the advice i would give is don t go into a known. what we re doing is going into the schools before