Again, Michael, ,thanks for sharing your powerful story of your Dad, he sounds so representative of that "do your job but don't talk about it"  Generation.  I hope you were able to be close to him in spite of any PTSD  problems  he may have had, but "survivor's guilt" must have been painful after  losing a whole crew..
It's good he knew he was about to have a granddaughter before he died though he never saw her.   And I hope your brother survived his SEAL duty OK.
That great photo of 95 year old Andy Andrews sitting in the plane with his head bowed made me wonder what, or who, he was thinking about, just as your father likely never forgot the comrades he lost over New Guinea.