The Swann/Puthoff method of controlled remote viewing is not the only kind of remote viewing that exists. There were forms that preexisted CRV (primarily “GRV” and “ERV”). Once the Star Gate Program was disbanded and declassified, some of the military viewers as well as newly-emerging civilian enthusiasts tinkered with the original methodology to come up with their own versions and interpretations. This produced a variety of methodologies, some abbreviated as TRV, SRV, and even modifications of CRV itself, as well as others. Below are links to summaries on this website of the various types of remote viewing practiced today.