I like your thinking anon.
Might we consider the UK's Tavistock Institute as the possible overseas location for experiments?
I believe Australia is a possibility as well.
Harry Bailey, the doctor who developed the treatment in New South Wales,
once said that the drugs put a patient’s mind on holiday. The drugs, he
said, have very beautiful chemicals that allow us to produce very stylish
results in people’s mental functions. Bailey committed suicide in 1985.
https://www.newscientist.com/article/mg12917500-400-nightmare-on-chelmsford-sydney/