Hanford Engineer Works — wartime unidentified aircraft reports (1944–1945)

Case

Overview

Fourth Air Force daily diaries dated January 23 and 25, 1945 describe repeated unidentified aircraft reports over restricted Hanford airspace, searchlight deployment, radar detection and unsuccessful attempted Navy interception. This documents an air-defense concern, not a nonhuman craft.

Investigative phases

At least three reported nights over prior month; searchlights in place January 15; radar contact and unsuccessful intercept; requests for night fighters; later Robert Hastings interview with former Navy officer Clarence R. Clem.

Reported phenomena

Unidentified aircraft/bogie over restricted airspace; later secondhand testimony of a bright reddish-orange object and rapid departure.

Public evidence status

Reproduced text/images of contemporaneous Fourth Air Force records (Jan 23/25); archival provenance described by Project 1947; Clem interview decades later is secondary to pilot Brown’s alleged observation. Original NARA scans and flight/radar logs still to be independently examined.

Alternative explanations / caveats

Wartime aircraft, misidentification, balloons, radar error or unknown mundane causes; diary uses aircraft/bogie terminology and does not document extraordinary acceleration. Later oral account must not be conflated with 1945 record.

Next research tasks

Retrieve NARA AAF Intelligence Decimal File 319.1 Daily Diary originals, Navy Pasco squadron and radar logs, Hanford security records; verify Clem/Brown identities and dates.

Last reviewed

2026-11-01

Assessment

Event date

1944-12 to 1945-01

Source category

Fourth Air Force contemporaneous daily diaries (reproduced); later witness interview

Original data accessibility

Reproduced diaries accessible; original archival files and raw radar data not independently examined

Witness / instrument basis

Repeated military reports; searchlights; brief radar contact; attempted Navy intercept

Corroboration limitations

No identified direct pilot account in contemporary material; retrospective witness secondhand; no raw radar data

Extraordinary claim assessment

No extraordinary craft or propulsion established

Current status

Documented wartime unidentified aircraft reports; explanation unresolved

Priority research task

Verify original NARA files, Pasco flight logs and Hanford security records

Lead source ID

SRC-140

Last reviewed

2026-11-01

Evidence (3)

• Fourth Air Force diary records three or more nights of unidentified aircraft reports over Hanford, searchlight deployment, brief radar contact and failed interception. Documented
  CE-160 · 1945-01-23 · Contemporaneous military memorandum (reproduced)
  Gaps: Wartime intrusions, misidentification, radar limitations
• Fourth Air Force diary notes repeated radar bogie reports and consideration of night fighters at Naval Air Station Pasco. Documented
  CE-161 · 1945-01-25 · Contemporaneous military memorandum (reproduced)
  Gaps: Radar false returns and unidentified conventional aircraft
• Former Navy officer Clarence Bud Clem recounts relaying a pilot’s description of a bright object during interception. Alleged
  CE-162 · 1945-01 (recounted 2013–2015) · Retrospective witness testimony; partly secondhand
  Gaps: Memory distortion; missing corroboration; chronology discrepancies

Documents gathered (3 lines of evidence)

0 readable here · 2 with a linked primary record · 1 still need a document · All cases on the evidence map

• Fourth Air Force diary records three or more nights of unidentified aircraft reports over Hanford, searchlight deployment, brief radar contact and failed interception. Primary record linked
  CE-160 · Fourth Air Force daily diaries January 23 and 25, 1945 (transcriptions and images)
• Fourth Air Force diary notes repeated radar bogie reports and consideration of night fighters at Naval Air Station Pasco. Primary record linked
  CE-161 · Fourth Air Force daily diaries January 23 and 25, 1945 (transcriptions and images)
• Former Navy officer Clarence Bud Clem recounts relaying a pilot’s description of a bright object during interception. Accounts / secondary only
  CE-162 · Reports Confirm UFO Activity at the Hanford Nuclear Weapons Plant During World War II
  Why it's still open: Locate direct pilot account and squadron flight logs. Chunk M search (2026-11-12): The Fourth Air Force diaries already on CE-160/161 (SRC-140, 23 and 25 Jan 1945) record plans to intercept with radar and night fighters at NAS Pasco, which fits the squadron dates Hastings found in Clem's records (Pasco, 9 Jan to 15 Feb 1945). They name no pilot and describe no object; Clem's own writing gives March/April. No pilot account or squadron log found. Flag stays.

On the timeline (1)

• 1944-12 to 1945-01 Hanford Manhattan Project site: Fourth Air Force diaries record unidentified aircraft reports, radar contact, searchlights and attempted interception. Claim unverified
  Military response documented in reproduced 1945 diaries; identity and extraordinary nature unproven