Declassified CIA documents reveal how astral projection (remote viewing) was developed and studied by the CIA.
Source Material:
https://www.cia.gov/readingroom/docs/CIA-RDP96-00788R001700210004-8.pdf?fbclid=IwAR1PmrygmlvYfFxEQB0O9ogVmPUZxEfirXQl4TRNY70KHoP9nKk1dvF-idw
https://www.vice.com/en/article/7k9qag/how-to-escape-the-confines-of-time-and-space-according-to-the-cia
https://www.vice.com/en/article/v7e4g3/found-page-25-of-the-cias-gateway-report-on-astral-projection
