"Hersh uses the testimony of one person, mixed alongside that aforementioned historical or political commentary, as evidence for every significant aspect of the alleged conspiracy. Here is the first mention of that source:

Last June, the Navy divers...... according to a source with direct knowledge of the operational planning."

"Hersch was asked by the Russian news agency TASS about the identity of his source. He told them that, "It's a person, who, it seems, knows a lot about what's going on."

https://www.snopes.com/news/2023/02/10/hersh-nord-stream-sab...