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Karl Nell

Retired Army colonel who corroborated Grusch to journalists, publicly asserted NHI is real, and in Oct 2025 argued the 2017–2025 disclosure cycle has ended.

Current role: Retired U.S. Army colonel; technology executive; speaker on UAP disclosure strategy, last publicly in October 2025 (no 2026 statements located as of 2026-10-10)

Former roles:

  • Army Director supporting the UAP Task Force (final military assignment)
  • Deputy Chief of Staff, U.S. Africa Command; Modernization Advisor to the Vice Chief of Staff of the Army
  • Senior roles at Bell Laboratories, Lockheed Missiles & Space and Northrop Grumman/TASC

Background

Retired U.S. Army colonel whose final military assignment was as Army Director supporting the UAP Task Force, after a career that included activating an expeditionary military intelligence brigade and serving as deputy chief of staff of U.S. Africa Command, alongside about three decades in defence industry. Named by Leslie Kean and Ralph Blumenthal in the original June 2023 Debrief story as one of the officials who vouched for David Grusch ("beyond reproach"). He has since become one of the most direct on-record voices asserting the reality of non-human intelligence, while critiquing the absence of a legislative framework for disclosure. His public output slowed after October 2025: no new statements have been located in 2026.

On the record

  • 2025-10-25 – Sol Foundation Symposium, Lake Maggiore, Italy – talk "The History and Future of UAP Disclosure": framed the evidence base as three types (foundational facts, testimonial, sensor and documentary), described a congressional briefing book being assembled for lawmakers, and stressed oversight of incursions at nuclear sites. Video released 8 Jan 2026. Talk video · Agenda
  • 2025-10-19 – interview – argued the disclosure wave that began in 2017 has effectively run its course, citing the failure of the Schumer–Rounds UAPDA and repetitive hearings. He said that without a legislative framework Congress has "written themselves out of any type of way forward" and that stakeholders must "take stock of what worked and what didn't". Clip
  • 2025-05-11 – white paper "The UFO Enigma: A Call for US Government Disclosure", published via the Sol Foundation – a history of the topic and recent initiatives including the UAPDA, with a call for broader support for transparency and accountability measures. Paper
  • 2024-05-21 – SALT conference, NYC – "Non-human intelligence exists. Non human intelligence has been interacting with humanity. This interaction is not new and has been ongoing." Clip · Full talk
  • 2023-11-17 – Sol Foundation inaugural conference, Stanford – presented a slide on a possible controlled-disclosure trajectory (reconstruction). Reconstruction

Reported claims (secondary / anonymous-sourced)

  • 2023-06-05 – per Leslie Kean (The Debrief) – called Grusch "beyond reproach" and supported his claim of a retrieval/reverse-engineering program. The Debrief

Timeline of involvement

  • 2023-06-05 – named as Grusch corroborator
  • 2023-11-17 – speaks at Sol Foundation conference
  • 2024-05-21 – SALT NHI statement
  • 2025-03-09 – featured in the documentary The Age of Disclosure (trailer)
  • 2025-05-11 – "The UFO Enigma" white paper
  • 2025-10-19 – "cycle has ended" interview
  • 2025-10-25 – Sol Foundation Symposium talk
  • 2026-01-08 – Sol Forum publishes the symposium talk

Part of the Key People in Disclosure series. Verified 2026-10-10. Spotted an error? Reach out.