21.   Russian rescuers continued struggling to reach the submarine, but were frustrated by powerful currents and almost zero visibility on the sea floor.

22.   Seventy-five firefighters using boats and rappelling cords rescued six people stranded at the base of an open river lock after their boats capsized in a powerful current.

23.   The bodies of at least five people were seen floating away in the powerful currents.

24.   The dugout canoe headed across the Congo River, its small outboard motor struggling against the powerful current before it sputtered and ran out of gas.