The National Security Agency denied researcher John Greenewald's FOIA appeal on September 17, 2026, refusing to confirm or deny whether it holds records on the alleged "Immaculate Constellation" UAP program. This decision creates a stark contrast with the Department of War's earlier blanket denial of the program's existence, exposing institutional inconsistency in government classification protocols on sensitive UAP matters.
On September 17, 2026, the National Security Agency rejected a Freedom of Information Act appeal filed by John Greenewald of The Black Vault, an independent FOIA researcher specializing in classified government records. The appeal sought to compel the NSA to explicitly confirm or deny the existence of intelligence records related to the alleged "Immaculate Constellation" program, described in whistleblower accounts as an unacknowledged Special Access Program (USAP) created to consolidate and isolate UAP observations from military and intelligence collection systems. Instead of providing clarity, the NSA upheld its original Glomar response—a legal position that neither confirms nor denies the existence of responsive records—citing national security protections as justification.
The Immaculate Constellation program has been at the center of UAP disclosure debates since late 2024, when journalist Michael Shellenberger reported whistleblower allegations describing it as a classified initiative established by the Department of Defense in 2017 following public exposure of the earlier Advanced Aerospace Threat Identification Program (AATIP). According to the whistleblower documentation presented to Congress, Immaculate Constellation allegedly functions as a "parent" Special Access Program that collects, analyzes, and compartmentalizes UAP-related imagery, signals intelligence, and encounter documentation gathered by military and intelligence sensors worldwide. The reported database allegedly contains high-resolution intelligence from satellites, aircraft, naval platforms, and ground-based collection systems spanning decades of observation.
The contrast between NSA and Department of War responses creates a bureaucratic paradox that highlights fundamental transparency obstacles. The Department of War, in its January 2026 response to a separate FOIA request, categorically stated it had "no record, present or historical, of any type of SAP called 'IMMACULATE CONSTELLATION.'" However, the NSA's position—refusing even to acknowledge whether records exist—implies acknowledgment of responsive materials while asserting that confirming or denying their existence would compromise classified intelligence sources, methods, or activities. Legal experts and transparency advocates argue this discrepancy reveals how agencies can simultaneously deny a program's formal existence while implicitly acknowledging classified information pertaining to it.
Greenewald filed his initial FOIA request in December 2024, specifically seeking NSA intelligence records or records revealing intelligence-related activity involving UAPs and UFOs. The NSA initially issued the Glomar response, describing it as standard agency practice for all requests believed to involve intelligence records or activities related to UAPs. When Greenewald appealed in December 2024, he argued that the Pentagon had already publicly denied the program's existence, making a Glomar response logically inconsistent. He further contended that congressional submissions, Office of the Director of National Intelligence records, and extensive press coverage demonstrated that "Immaculate Constellation" had already entered official government discourse at senior levels, regardless of the program's factual status. The appeal reasoned that acknowledging the existence of records discussing a topic already mentioned in official channels would not compromise additional classified information.
The NSA rejected this reasoning in its appeal denial. The agency stated that while another government entity might have confirmed or denied the program's existence, such determinations do not obligate the NSA to make parallel determinations regarding its own classified records. The agency asserted that even confirming whether intelligence records exist on a specified topic could reveal classified collection capabilities, analytical sources, or intelligence relationships protected by national security exemptions. This interpretation of FOIA exemption (b)(3) reflects decades of precedent in which intelligence agencies have successfully defended Glomar responses in federal courts, established most prominently in cases where the NSA refused to confirm or deny conducting warrantless surveillance activities.
Meanwhile, the broader Immaculate Constellation controversy remains unresolved within government oversight structures. Congressional UAP task forces have requested that AARO (the Pentagon's All-domain Anomaly Resolution Office) investigate allegations that the program deliberately removes or compartmentalizes UAP data to prevent integration into official UAP tracking systems. Representative Nancy Mace and other members of the Oversight Committee's UAP task force received the original 12-page whistleblower document detailing the program during a November 2024 hearing. The document alleged that Immaculate Constellation consolidates observations from multiple intelligence disciplines and maintains an extensive database of UAP incidents, including encounters involving military personnel, naval aviators, and classified collection platforms. No classified review or congressional investigation into these specific allegations has been publicly disclosed as concluded.
The NSA's appeal denial effectively closes one legal avenue for obtaining records documentation while leaving the core mystery intact. Greenewald indicated he may pursue further legal remedies, noting that the decision leaves unresolved the question of whether publicly denying a program's existence creates an obligation to address or clarify records that may discuss it under alternative nomenclature. He emphasized that the NSA's position—neither confirming nor denying—constitutes acknowledgment that responsive records potentially exist, even as the agency refuses to characterize them. This jurisprudential middle ground preserves government classification authorities while creating interpretative uncertainty that frustrates transparency efforts.
The decision underscores persistent structural obstacles to UAP disclosure despite the Trump administration's PURSUE initiative, which has released six tranches of declassified files since May 2026. While publicly released UAP files continue expanding, classified or compartmentalized programs allegedly documenting the most sensitive encounters remain shielded by FOIA exemptions and interagency classification protocols. Intelligence community sources have suggested that the most extraordinary encounter documentation remains classified under procedures that restrict access to special compartmentalized information (SCI) requiring specific need-to-know determinations, making them unavailable even through formal UAP disclosure channels. The Immaculate Constellation case illustrates how government can simultaneously pursue public transparency initiatives while maintaining impenetrable legal barriers around more sensitive classified holdings.
