NASA Mercury-Redstone 4 – UAP Sighting (1961)

NASA Mercury Redstone 4 UAP document from the PURSUE archive (war.gov/ufo): Unidentified phenomenon observed during the Mercury Redstone 4 mission (July 1961). Astronaut Gus Grissom conducted the second US spaceflight. The document was released in 2026 under the PURSUE Act. Mercury Redstone 4 (Liberty Bell 7) was the second crewed US space mission.