What do defence manufacturers need from quality software?
Defence (defense, in US terms) programmes need tight document control, approved changes with a clear trail, supplier oversight and inspection records that hold up to customer quality reps. Many programmes also need the system to run inside the company network, not on a shared public cloud.
A lot of defence suppliers keep quality on paper or on a file server for exactly that reason. It is safe, but slow, and proving who approved a revision three years ago can take days.