Here some references of Ingo Swann and Hal Puthoff about Scientology on Wikipedia :
Puthoff took an interest in the Church of Scientology in the late 1960s and reached what was then the top OT VII level by 1971.[3] Puthoff wrote up his "wins" for a Scientology publication, claiming to have achieved "remote viewing" abilities
https://en.wikipedia.org/wiki/Harold_E._Puthoff
Ingo Swann was interviewed in "Advance!" magazine, published by the Church of Scientology, as Scientology "Clear #2331, Full OT VII and Class VI auditor", on at least three occasions between 1973 and 1978. In "Advance!" issue 21 (Oct/Nov 1973, UK edition), he was asked by the magazine: "How did these [psychic] abilities develop with relationship to your auditing on the [Scientology] OT Levels?" to which he answered "They are solely the result of auditing. Not particularly even the OT Levels. I had extremely good gains from the lower grades. And some had developed certainly by the time [Scientology] Power Processing took place. But steady good control over them, the control I have now -- which is not perfect by the way -- occurred after the completion of OT III Expanded, and is even better than ever now that I have finished OT VII. So they are solely the result of auditing.
https://en.wikipedia.org/wiki/Talk:Ingo_Swann