I haven’t rewatched 12 Angry Men in a while, but at the 1:11:23 mark of its DUG recording, it’s discussed that the first Transit/Signpost (Memory) is related to the jurors going over what they remember of the case. There’s also a mention of the woman’s testimony and questioning her memory of the events, but from what I recall it happens far too late in the movie for it to be part of the first Transit.
In one of the first scenes available on YouTube, they seem to be looking back on the defendant’s life, arguing that what he’s done in the past makes him suspicious, which brings Juror #3 to remember his son and the last fight he had with him before he left.
I haven’t watched/read that many stories with an OS in Mind, and the ones I did mostly seem to be about memories & flashbacks when it comes to their Transit of Memory, such as the Protagonist remembering her former maidservant in The Help (Transit 1 of Memory), recalling Jack’s origins with the handbag in The Importance of Being Earnest (Transit 4 of Memory), and Anna finally remembering who Marnie is in When Marnie Was There (Transit 4 of Memory).
I don’t remember much about The Father, and the story was mainly centered around the Main Character’s issues with his memories, so I’m not exactly sure what the Transit 4 of Memory was, maybe the big revelation that he had been misremembering the person who was meant to help him all along?
Jim once mentioned that Memory could be about suppression or bottling things up, and not just remembering or forgetting.
It was the last known sighting photo, to be more precise (I remember your old post on it).
Something I noticed was that Juror #3 also brings a photo (of his own son) when he mentions his lost family member in the first Transit. I find the parallel interesting.