The most common problem is a valve at the back of the toilets that can be knocked loose and cause all of the toilets (which the Navy calls heads) in one of 10 zones to lose suction.
Some information is not digitized, and I doubt that all digitized information has been accurately processed by a machine.
This might also be relevant: https://stopcitingai.com/
I avoid using Signal because I don't like that creating (and perhaps even maintaining) an account requires interaction with the public switched telephone network. I generally don't see much discussion about the methods I prefer to use to communicate nowadays.
For "real-time communication" for individuals who don't want to maintain their own communication infrastructure, the information around https://www.privacyguides.org/en/real-time-communication/ is surely at least somewhat useful.
The recommendations might not be suitable for "government communication" or for people who are capable of setting up and maintaining a lot of infrastructure since I wouldn't describe the infrastructure required as being easy to host independently: it doesn't seem to be easy to set up 3 servers and make it possible to use them to communicate even if something bad happens to the communication network maintained by the original creators of the software. However, the Matrix protocol might be unsuitable for this too, since it is considered to be "social networking software" now, and it stopped being a recommendation for encrypted real-time communication: https://www.privacyguides.org/en/social-networks/#element
https://www.npr.org/2026/01/15/nx-s1-5676229/the-uss-ford-crew-is-struggling-with-sewage-problems-on-board-the-navys-new-carrier