"Paperwork To Follow..."

A reader writes:
Joel, have you ever done a post on your "favorite" PM, maintenance or "fix" done on the Boat?
I'm sure we have, but can't remember exactly when, so it was probably a while back. The E-mail got me thinking about the most memorable "midnight maintenance" that I was involved in as a JO, but everything I thought about had too much NNPI to share here. As Engineer, of course, my job was to decide when to trust my guys to do the right thing and choose to work on paperwork in my stateroom during the critical repair efforts rather than monitoring on scene.

What are your favorite stories of submarine maintenance that maybe you wouldn't have wanted surveilled by ORSE or TRE?