This document must be post Apollo 13. Copied verbatim from the linked PDF: > Even the Apollo 13 oxygen tank rupture, by far the most critical problem of any Ap

This document must be post Apollo 13. Copied verbatim from the linked PDF: > Even the Apollo 13 oxygen tank rupture, by far the most critical problem of any Apollo mission to date, was overcome by relying on preplanned emergency procedures and the resourcefulness and ingenuity of the astronauts and the ground support team.