Great work. Since Phil's dad was foreign service officer in Germany, and the Boerner surname is German, I figure it's possible that Phil also worked as a foreign service officer to Germany, but used an alias, thus
>Search foreign posts (State).
>Face important.
If you want to help I'm digging names in the 2009-2017 German section here:
https://2009-2017.state.gov/documents/organization/111812.pdf