In the month since veteran journalist Seymour Hersh published his bombshell report alleging that President Joe Biden personally authorized a covert action to bomb the Nord Stream pipelines, we've seen a frenzy of speculation, detailed dissection of Hersh's specific assertions, and the emergence of competing narratives both supporting and denouncing the report. On March 7, the New York Times and the German newspaper Die Zeit both published stories that thicken the plot. The Times story was based on a narrative clearly being pushed by U.S. intelligence sources that "a pro-Ukrainian group carried out the attack." If the bombing of the Nord Stream pipelines was, as Hersh alleges, directed by the U.S., then the leaked suggestion that the culprits were a "pro-Ukrainian group" could indicate a nascent effort at floating a cover story. No one has claimed responsibility for this attack, but there are recent precedents for foreign actors taking credit for U.S. operations to conceal Washington's involvement. Military officials have lied or misled the public ... throughout U.S. history. There is no U.S. law or rule prohibiting the government from promoting a false alternative explanation to conceal an operation. "This is an established practice in military operations and intelligence activities where it is often known as 'cover and deception,'" [said former Government Secrecy Project director Steven Aftergood]. "Sometimes, in order to maintain the operational security of X, you have to declare that it is actually Y."