For some reason I feel really compelled by accounts of the crash involving the USS Fitzgerald that killed sseven crew members. It’s a really interesting case of how the build up of lots of little decisions, shortcuts, putting crew under pressure, can lead to something dreadful.
I first heard about it in detail from this amazing This American Life segment by Stephanie Foo. More recently though, ProPublica published this incredibly detailed and moving account of the incident. I love things that dig into awful events so meticulously. Another example is The Death of A President by William Manchester, Secret Service agent posted on the occasion of the assassination of JFK.