In 2009, Brazil became the first country to institutionalize ongoing military UFO disclosure, releasing over 2,200 pages of formerly classified documents to the Arquivo Nacional and issuing Ordinance 551/GC3 requiring all armed forces branches to forward UAP reports to the national archive annually. The files span 1952 to 2015 and include radar data, photographs, and pilot reports from the FAB's SIOANI investigation system.

The 2009 release included the full classified report on the May 19, 1986 'Noite Oficial dos OVNIs' event, Operation Prato era materials, and dozens of previously unknown military pilot encounters. Brazil's approach, mandatory annual reporting to a public archive, remains unique among major nations. Researchers including A.J. Gevaerd of the Brazilian UFO Magazine and the Comissão Brasileira de Ufólogos pushed for the releases over more than a decade through FOIA equivalents.