By John Cordle*
A common saying in safety organizations is to consider the “half-life of scared” as a measure of the decay of institutional urgency after an accident. In 2017 the U.S. Navy lost 17 sailors in two tragic collisions that prompted an assessment of how the Navy looked at fatigue, human-centered system design, and an overzealous “can-do” attitude. (From: The Center for International Maritime Safety.)