Missing walkers spent freezing night in Cairngorms in bivvy bag

Two walkers are lucky to be alive after getting lost and spending the night in the snowy Cairngorms national park in northern Scotland. The couple were found on Monday morning after a major search involving a rescue helicopter. A bivvy bag the 60-year-old man and 57-year-old woman had with them "probably saved their lives" from the freezing temperatures, one rescuer said.