I remember hearing that while medical workers work very long shifts of consecutive hours, there is still a very noticeable drop in performance--however, there w

I remember hearing that while medical workers work very long shifts of consecutive hours, there is still a very noticeable drop in performance--however, there was an even larger drop in care when they switched shifts. So while the long shifts are problematic, the reduction in shift switches outweighs it. I imagine the armed forces have a similar rationale--they seem to be pretty thorough about studying these types of things.