I believe Polax 52 was referring to the closure of the AACS base at STN,
years after the formation of GSS. AACS consisted of European pilots flying Atlas schedules, not to be confused with the GSS flights for BAWC.
Just as an aside, since it has no relevance to the UPS/TNT situation, AACS (then renamed AABO) also employed American pilots. And in the here and now Atlas employs a significant number of pilots with European passports.
The structure and politics of AACS/AABO were complex, but most of all it was a mess.