Very funny Pete Smith short about how people having accidents can hurt the war effort. This was a WWII era short, after all. So we get to see poor Dave O'Brien put through all sorts of demonstrations of accidents, which of course means lots of pain for Dave and lots of laughs for us. Dave O'Brien was always great in these Pete Smith shorts and stands as one of the more underrated comedic actors of his era. Some neat peeks into the daily routines of people back then. I always find that stuff interesting. Some of the tips were pretty good, too, and still relevant after all these years. Oh, and in case you're wondering about the title: we're told the seventh column is carelessness.