Underway punching holes in the ocean (submarines) and we were doing some maintenance on a CO2 scrubber amine compressor. Putting pin back next to compressor foot (all 4 corners were pinned for alignment purposes) and instead of grabbing hammer RIGHT NEXT TO HIM, grabbed the ratched and did what's in your picture.....sigh.
In middle of ocean and can't exactly replace tools. Yeah, he caught hell for it.