It was in this last batch of government secrets, the people familiar with the matter said, that the information about a foreign government’s nuclear-defense readiness was found. These people did not identify the foreign government in question, say where at Mar-a-Lago the document was found or offer additional details about one of the Justice Department’s most sensitive national security investigations.

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Investigators grew alarmed, according to one person familiar with the search, as they began to review documents retrieved from the club’s storage closet, Trump’s residence and his office in August. The team soon came upon records that are extremely restricted, so much so that even some of the senior-most national security officials in the Biden administration weren’t authorized to review them. ...counterintelligence FBI agents and prosecutors investigating the Mar-a-Lago documents were not authorized at first to review some of the material seized.

Among the 100-plus classified documents taken in August, some were marked “HCS,” a category of highly classified government information that refers to “HUMINT Control Systems,” which are systems used to protect intelligence gathered from secret human sources, according to a court filing. A partially unsealed affidavit said documents found in the boxes that were sent to the National Archives in January related to the Foreign Intelligence Surveillance Court. There was also material that was never meant to be shared with foreign nations.

The investigation into possible mishandling of classified information, as well as possible hiding, tampering or destruction of government records

[This Orange mammal destroyed gov't docs, flushed them down the toilet in some instances; my fear all along, after the fear that it would give to or exchange them with a foreign government, has been that he has secreted others not found away in a tree trunk or safety deposit box or has simply flushed them, losing them forever for the government.]

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Loose Cannon also reasoned that a special master could mitigate potential harm to Trump “by way of improper disclosure of sensitive information to the public,” suggesting that knowledge or details of the case were harmful to the former president, and could be lessened by inserting a special master into the document-review process.