Unidentified figure Carl remembers mid-crisis, one more thread he has no time to untangle.
In the middle of telling Samantha he is sorry about her daughter, Carl has a sudden thought about War — and still does not know who that is. He notes that he really needs to sit down and figure all this out.
He sets it aside immediately. For right now, they need to save Louis. The unanswered question is left hanging as one of the loose threads Carl is carrying through the crawl.
An unresolved mystery Carl briefly recalls and deliberately postpones.