DISCLOSURE / FILE
A NASA Project Mercury recovery-team record from the Mercury-Redstone 4 (Liberty Bell 7) mission on July 21, 1961, in which the recovery team discusses a water-marker dye pack that failed to activate.
NASA-UAP-D014, Mercury-Redstone 4, July 21, 1961
A NASA Project Mercury recovery-team record from the Mercury-Redstone 4 (Liberty Bell 7) mission on July 21, 1961, in which the recovery team discusses a water-marker dye pack that failed to activate.
This NASA file, cataloged as NASA-UAP-D014, documents the North Atlantic recovery phase of Mercury-Redstone 4 (Liberty Bell 7), the fourth Project Mercury launch and the second crewed U.S. spaceflight, on July 21, 1961. The released material is image-only with no machine-extractable text; the description states only that the recovery team discusses a sea-dye marker pack in the water that did not activate. No anomalous phenomenon is asserted in the description, and the underlying source pages were not provided as readable text, so no verbatim quotes can be confirmed here. The item appears in NASA's UAP-tagged disclosure tranche released May 22, 2026.