A helicopter is seen at the scene of crash involving a bus transporting students that veered off a road, near Biggar, 50 miles (80 kilometers) southwest of Glasgow, Scotland, Wednesday, March 31, 2010. Scottish police said a group of teenagers on a school trip were injured after their bus veered off a road and crashed. A police spokesman said four of the group were seriously injured, calling conditions in the area "horrendous." (AP Photo/PA, Mark Attwood)