Mercury-Redstone 4, July 21, 1961

NASA-UAP-D014 is an audio recording dated July 21, 1961, produced by NASA and released under the PURSUE program on May 22, 2026. It captures communications among the recovery team during the post-splashdown recovery of Mercury-Redstone 4 (Liberty Bell 7), the second crewed Mercury flight, which carried astronaut Gus Grissom. The incident location is the North Atlantic Ocean. The recording concerns a dye marker pack in the water that did not activate as expected during recovery operations.

The document's inclusion in a UAP release program is notable given its mundane subject matter — a malfunctioning dye pack is a routine recovery logistics issue, not an anomalous aerial phenomenon. The OCR text is fragmentary and largely incoherent, suggesting poor audio quality or transcription errors, making meaningful analysis difficult. No UAP-relevant content is evident from the available text. Its presence in this release may reflect broad or imprecise document scoping rather than any direct connection to unidentified aerial or aerospace phenomena.