A worker falls into water and his co-worker runs for a rescue ring, only to discover it’s secured around a metal pole and can’t easily be freed. “Hang on,” he says to his struggling co-worker. “It’ll only take a minute or two for me to track down a knife to cut this rescue ring free.” There is a large, uncovered tank beneath the walkway in this photograph. Forgive us for saying that the person who placed this ring didn’t seem to have both oars in the water. (Naval Safety Center)