As is the case on every 10APR, I find myself – even in the midst of the present national and, really, worldwide crisis – returning to thoughts of the USS THRESHER on this date in 1963. All of us who have been through the Naval Nuclear Power Program and served in submarines are aware to greater or lesser extent what happened; my experience, having served aboard one of the SUBSAFE boats whose development was a direct result of the accident, lends perhaps to more sustained reflection.