User blog comment:AugFC/Black Ops 3's story - explained/@comment-24.165.26.87-20160204010250/@comment-1916935-20160204020107

It's pretty obvious that the cutscene before Life is what happened just before the final cutscene for the second mission and what happened before the first mission. You don't even need to follow Aug's theory to realise that, just pay attention to the cutscenes.