There’s a fine line between done, and done-done.
My father-in-law works in Safety for a large commercial airline carrier. Every safety-related incident – from an engine exploding inflight, to a pregnant woman mistakenly placed in the EXIT row – goes past his desk. These incidents are documented, monitored, tracked and precautions are put into place to ensure they don’t happen again. All relevant individuals are consulted on the particular incident to clarify all information was correct, and to ascertain where the fault lies. From there, new policies, new tech, staff training, etc. are put into place to ensure the safety of all future passengers.