When I was in the USAF, I was at Incirlik. I don’t know what it was, but I felt this oppressive feeling, like I was in an evil place. That was back in the 80s, and I have never thought that Turkey was our ally.
Amen brother. Retired USAF here, and I landed and spent days and nights at Incrilik (and all over the Middle East) many times.
To be blunt, most of the Turks hated us. I never considered them part of NATO, because I considered Western Europe to be the real NATO. People forget that not too long ago, our real NATO allies backed us strongly. It wasn't like Europe of today (as you well know).
The oppressive, heavy feeling you felt is exactly what I experienced in most Middle East countries. I could not put my finger on it at the time, but today I completely believe it is spiritual in nature.
The Bible speaks of geographic areas and nations that are in the clutches of specific demonic beings. Daniel 10:13 is one example, describing how an angel had to contend with a demonic being who had control of Persia (Iran) before the angel could assist the prophet Daniel.
Ephesians 6:12 speaks of what we are up against.
You are most likely a very spiritually perceptive person.