NASA-UAP-D014, Mercury-Redstone 4, July 21, 1961

Department of WarVideoIncident ReportNo redactionsPURSUE Release 1

1/10

noise or low quality

UAP Insight significance score

Location: North Atlantic Ocean
Incident date: 7/21/61
Released: May 22, 2026

UAP Characteristics

Evidence Types

Testimony

Government Programs Referenced

Project MercuryPURSUE

Official Conclusion

Routine recovery operational note; dye pack did not activate during spacecraft recovery.

Official Description

During the recovery of the fourth launch and second crewed spaceflight of Project Mercury, Mercury-Redstone 4 (MR-4) Liberty Bell 7, the recovery team discusses a dye pack in the water that did not activate.

Key Findings

→During the recovery of Mercury-Redstone 4 (Liberty Bell 7), the second crewed U.S. spaceflight, recovery teams observed a dye pack in the water that had not activated as expected.
→The incident occurred on July 21, 1961, in the North Atlantic Ocean during post-splashdown recovery operations.
→No UAP or anomalous aerial phenomena are described in the official document description.

UAP Insight Analysis— AI generated, not official

This document pertains to the Mercury-Redstone 4 (MR-4) Liberty Bell 7 mission recovery operation on July 21, 1961, specifically communications regarding a dye marker pack in the water that failed to activate during spacecraft recovery in the North Atlantic Ocean. The content describes a routine recovery operational detail rather than any UAP or anomalous aerial phenomenon.

Analyst Notes

This document contains no UAP content. It describes a routine spacecraft recovery operational anomaly — a dye marker pack that failed to activate — associated with the Mercury-Redstone 4 mission. It appears to be misfiled or misclassified under a UAP program release. No aerial phenomena, unidentified objects, or anomalous observations are referenced.

Extracted Entities

Agencies & Organizations

NASADepartment of War

Locations

North Atlantic Ocean

Aircraft & Objects

Mercury-Redstone 4 spacecraft Liberty Bell 7dye pack (non-activated marker in water)

Dates

July 21, 1961

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AI analysis by claude-sonnet-4-6 · July 20, 2026