Montauk Air Force Station operational history

The operational history of Montauk Air Force Station is drawn from Air Defense Command records held at the Air Force Historical Research Agency at Maxwell Air Force Base in Alabama. The records document the facility from its World War II origins through its formal decommissioning in 1981. They are supplemented by Freedom of Information Act releases from the Air Force, Army Corps of Engineers site survey reports, and environmental remediation records filed in the 1990s.

The facility known today as Camp Hero State Park on the eastern tip of Long Island, New York, operated as a military installation for nearly four decades. The records covering that period are largely declassified. The records covering what happened after the facility's official closure are not.

Fort Hero was established in 1942 on the eastern point of Long Island as a coastal defense installation. The Army upgraded the site during World War II and renamed it Camp Hero. Reconnaissance aircraft, Coast Guard personnel, and anti-submarine units operated from the location during the war years, when German U-boats were active along the eastern seaboard.

In June 1948 the Air Force installed an AN/TPS-1B long-range search radar at the site and designated it Montauk Point L-10. The facility fed targeting data into a primitive control center at Roslyn Air Force Station in New York. On 1 December 1953 the site designation changed to LP-45 and the installation was formally renamed Montauk Air Force Station. It was incorporated into the permanent Air Defense Command network of General Surveillance Radar Stations.

Between 1953 and 1960 the Air Force progressively upgraded the radar suite at the site. AN/CPS-5 and AN/TPS-10A height-finder radars were installed, followed by AN/FPS-3 and AN/FPS-5 systems. In 1960 the station received the AN/FPS-35, manufactured by Sperry Corporation. The AN/FPS-35 was one of the largest air defense radars ever produced. Its antenna measured 126 feet across and was supported by one of the largest rolling-element bearings in the world at that time. The system operated in the UHF band between 420 and 450 MHz and had a detection range of 250 miles. It was integrated into the Semi-Automatic Ground Environment, known as SAGE, the computerized air defense network designed to track Soviet aircraft in the event of an attack on North America.

The AN/FPS-35 tower still stands at the site. It is listed on the National Register of Historic Places. Its physical presence is not in dispute.

Montauk Air Force Station was officially decommissioned in 1969 according to Air Force records. The installation was formally closed and transferred in 1981, after which it became Camp Hero State Park. The Army Corps of Engineers conducted environmental remediation surveys of the site in the 1990s. Those surveys, spanning more than 1,200 pages and held at the Montauk Library Archives and partially available through the Internet Archive, document the physical infrastructure of the base including its battery emplacements, radar systems, and underground construction.

The Army Corps surveys confirm the existence of sealed underground tunnels beneath the site. The surveys document their presence. They do not document their full contents.

Freedom of Information Act requests directed at the Air Force regarding Montauk Air Force Station have produced two categories of response. Requests for records covering the operational period through 1969 have returned documents consistent with the facility's stated function as a radar installation. Requests for records covering the period after the official 1969 decommissioning have returned a different response.

The standard response for post-decommissioning records is that relevant documents either do not exist or cannot be located. This is a specific and meaningful distinction in FOIA practice. A response citing a classification exemption, typically exemptions (b)(1) through (b)(3), indicates that records exist but are being withheld. A response stating that records do not exist or cannot be located indicates either that nothing was created, that records were destroyed, or that the search was unable to locate them. The Air Force responses for the post-1969 period at Montauk AFS fall into this second category.

A 2021 Defense Intelligence Agency FOIA request specifically seeking records on research activities at Camp Hero was closed with a determination of no records. A series of CIA FOIA requests referencing the facility produced no substantive releases.

Former personnel who have spoken on record describe activities at the site that are inconsistent with its official decommissioned status. Their accounts are not verified by documentary evidence. They are noted here because they are part of the record that exists, distinct from the documentary record that does not.

The tunnels beneath Camp Hero are confirmed by Army Corps of Engineers documentation. They are sealed. Public access to the park since the 1990s has not included access to the sealed portions of the underground construction. Environmental surveys have not produced documentation of what those areas contain.

Power consumption records from the facility during its later operational period have been cited by researchers as anomalous relative to the stated function of the installation. Those records have not been released in full through FOIA channels.

The AN/FPS-35 radar operated by emitting electromagnetic pulses in the UHF band and measuring their return. The system was designed for aircraft detection at long range. Whether the infrastructure built to support it was used exclusively for that purpose during the facility's full operational history is not established by the available documentary record.

No declassified document supports claims of time travel experimentation, interdimensional research, or consciousness manipulation at Montauk Air Force Station. The claims associated with the Montauk Project, drawn primarily from a series of books published in the 1990s by Preston Nichols and Peter Moon, are not corroborated by any document in any government archive that has been released through FOIA or declassification review.

The absence of documentary corroboration is not the same as documentary refutation. The available record establishes a real facility, a real radar installation, confirmed underground construction, confirmed post-decommission activity acknowledged by the Air Force, and a FOIA record that returns no documents for the period in question. Those are the facts the documents support.