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“Project Sign”

Stories18

The ODNI Preliminary Assessment on Unidentified Aerial Phenomena (the 2021 Pentagon UFO Report)
June 25, 2021 · Washington, D.C. (delivered to the congressional intelligence committees)
United States
UAP · Unknown · 49 sources
51Partially documented
Munich / Fürstenfeldbruck Radar-Visual Sighting
November 23, 1948 · Fürstenfeldbruck Air Base, near Munich, Bavaria
Germany
UAP · Orb / light · 17 sources
42Partially documented
The Fukuoka F-61 Black Widow Radar-Visual Intercept
October 15, 1948 · About 50 miles northwest of Fukuoka, off the northwest coast of Kyushu, over the Korea Strait
Japan
UAP · Cigar · 16 sources
46Partially documented
The Gorman Dogfight
October 1, 1948 · Hector Airport, Fargo, North Dakota
United States
UAP · Orb / light · 58 sources
47Partially documented
The Chiles-Whitted Encounter
July 24, 1948 · 20 miles southwest of Montgomery, Alabama (near Hayneville, Lowndes County)
United States
UAP · Cigar · 66 sources
41Partially documented
Pro early
The St. Louis and Alton Giant Bird Flap (Thunderbird Sightings), 1948
April 1948 · Alton, Illinois, and greater St. Louis, Missouri, with a separate cluster around Caledonia and Freeport, northern Illinois
United States
Cryptid · Creature · 14 sources
28Thinly documented
The Mantell UFO Incident
January 7, 1948 · Godman Field, Fort Knox, to the Phillips farm near Franklin, Simpson County, Kentucky
United States
UAP · Other · 100 sources · 1 photos
50Partially documented
Pro early
The Chehalis Birdman: Bernice Zaikowski's flying man
January 6, 1948 · Chehalis, Lewis County, Washington
United States
Cryptid · Creature · 13 sources
14Thinly documented
The Twining Memo: AMC Opinion Concerning 'Flying Discs'
September 23, 1947 · Headquarters, Air Materiel Command, Wright Field, Dayton, Ohio
United States
UAP · Disc / saucer · 27 sources
28Thinly documented
Snake River Canyon Disc: The A.C. Urie Sighting
August 13, 1947 · Auger Falls Trout Farm, Snake River Canyon, near Twin Falls, Idaho
United States
UAP · Disc / saucer · 18 sources
23Thinly documented
Harmon Field Disc and Cloud Hole Photographs
July 10, 1947 · Harmon Field, Stephenville, Newfoundland
Canada
UAP · Disc / saucer · 17 sources
32Partially documented
Muroc Army Air Field disc sightings
July 8, 1947 · Muroc Army Air Field and Rogers Dry Lake, Kern County, California
United States
UAP · Disc / saucer · 25 sources
40Partially documented
Rhodes UFO photographs ("shoe-heel" photos), Phoenix, Arizona, 1947
July 7, 1947 · Phoenix, Arizona
United States
UAP · Disc / saucer · 33 sources · 1 photos
41Partially documented
United Air Lines Flight 105 Sighting, Emmett, Idaho
July 4, 1947 · Over Emmett, Idaho, northwest of Boise
United States
UAP · Disc / saucer · 18 sources
23Thinly documented
The Kenneth Arnold Sighting
June 24, 1947 · Near Mount Rainier and Mineral, Washington
United States
UAP · Other · 67 sources
35Partially documented
The 1947 Flying Disc Craze: America's First Flying Saucer Wave
c. 1947 · United States (nationwide, heaviest in the Pacific states: California, Washington and Oregon)
United States
UAP · Disc / saucer · 31 sources
55Partially documented
The USAT Delarof Sphere, Aleutian Islands (1945)
c. 1945 · Open sea past Adak, Aleutian Islands, Alaska
United States
UAP · Sphere · 12 sources
25Thinly documented
The Cape Girardeau Crash Before Roswell (Rev. William Huffman)
c. 1941 · Field west of Cape Girardeau Regional Airport, toward Chaffee, Missouri
United States
UAP · Being / humanoid · 36 sources
17Thinly documented

Names8

Documents298 · see all

  • Office of the Secretary of Defense: 05_AARO_Historical_Record_Report Official release
    Department of Defense. Office of the Secretary of Defense.· 2023· 63 pages· 7 pages mention it
    • p. 13 …Some of these efforts, including Projects SAUCER and SIGN, were closely connected and essentially the same organization. Project GRUDGE was…
    • p. 14 …Project SIGN (January 1948–February 1949) Background: Project SAUCER was formalized into an official, high-priority program named Project SIGN…
  • aaro historical record report volume 1 2024 Report
    The Black Vault· 64 pages· 7 pages mention it
    • p. 14 …Some of these efforts, including Projects SAUCER and SIGN, were closely connected and essentially the same organization. Project GRUDGE was…
    • p. 15 …Project SIGN (January 1948–February 1949) Background: Project SAUCER was formalized into an official, high-priority program named Project SIGN…
  • Historical Record Report Volume 1 March 8 2024 Report
    Office of the Secretary of Defense· 63 pages· 7 pages mention it
    • p. 13 …Some of these efforts, including Projects SAUCER and SIGN, were closely connected and essentially the same organization. Project GRUDGE was…
    • p. 14 …Project SIGN (January 1948–February 1949) Background: Project SAUCER was formalized into an official, high-priority program named Project SIGN…
  • AARO Historical Record Report Volume 1 Report
    All-domain Anomaly Resolution Office· 2024-03· 63 pages· 7 pages mention it
    • p. 13 …Some of these efforts, including Projects SAUCER and SIGN, were closely connected and essentially the same organization. Project GRUDGE was…
    • p. 14 …Project SIGN (January 1948–February 1949) Background: Project SAUCER was formalized into an official, high-priority program named Project SIGN…
  • Report on the Historical Record of U.S. Government Involvement with Unidentified Anomalous Phenomena, Volume I Report
    All-domain Anomaly Resolution Office· 2024-03-08· 63 pages· 7 pages mention it
    • p. 13 …Some of these efforts, including Projects SAUCER and SIGN, were closely connected and essentially the same organization. Project GRUDGE was…
    • p. 14 …Project SIGN (January 1948–February 1949) Background: Project SAUCER was formalized into an official, high-priority program named Project SIGN…
  • usaf f2 FOIA release
    Office of the Secretary of Defense· 1 pages· 1 page mentions it
    • p. 1 …Project Sign. Later the pr6gram's name . was changed to Project Grudge, and in 1953 it became known as Project…

All 298 documents →