https://twitter.com/FBIRecordsVault/status/1105876218350460929
PDF:
https://vault.fbi.gov/anthony-bourdain-part-01-of-01/anthony-bourdain-part-01-of-01/view
PDF Screen caps
The 300A classification denotes a FBI Special Events mission/investigation that is of an administrative nature.
https://oig.justice.gov/special/s0604/index.htm
>In addition to its SERL rating system, the FBI has created a special case management classification code for counterterrorism activities at Special Events – the 300A classification. The FBI’s MIOG provides that this classification is administrative and that no active criminal investigation should be conducted under it. In the event a criminal act occurs at a Special Event, the MIOG provides that a separate investigative file should be opened under the substantive violation. MIOG 300-1(5)(b). Intelligence and investigative information resulting from leads that do not result in the opening of preliminary inquiries or full investigations may be retained under the 300 classification in accordance with applicable guidelines and regulations.