HOMEINCIDENTSDOD-011
CONFIDENTIAL
DOD-011 · 1952-07-19

Washington D.C. UFO Flap — Capitol Airspace

DoDWashington D.C. / Capitol Airspace, USANorth America#1952Disc / Saucer~7,000 ft~6 hours (July 19–20); repeated July 26–27, 1952
EVIDENCE GALLERY

Visual reconstruction and recovered media extracted from the incident dossier. This case includes still evidence and analytical reconstruction.

Local reconstruction generated from dossier details

MEDIA STATUS
Analytical reconstruction generated from witness and sensor records.
SOURCE TYPE
Witness testimony, radar language, and dossier reconstruction.
VIEW MODE
Still view highlights silhouette, environment, and encounter geometry.
AT A GLANCE

Multiple unidentified objects were tracked on radar at Washington National Airport and Andrews AFB on two separate weekends in July 1952. USAF interceptors were scrambled twice; objects vanished when jets arrived and returned when jets departed. This prompted the largest Air Force press conference since World War II and remains one of the best-documented mass radar UAP events in U.S. history.

PRIMARY WITNESSES
Washington National Airport radar controllers, Civil Aeronautics Administration, USAF Air Defense Command pilots, commercial airline crew
EVIDENCE PROFILE
VISUAL RECONSTRUCTIONDISC / SAUCER
DECLASSIFIED DETAILS

On the night of July 19–20, 1952, radar operators at Washington National Airport (now Reagan National) detected seven unknown objects moving erratically over restricted airspace near the Capitol and the White House. The objects were simultaneously tracked on Andrews Air Force Base radar. Airline pilots in the area visually confirmed the objects as bright fast-moving lights. USAF F-94 Starfire interceptors were scrambled; each time jets arrived, the objects vanished from radar and visual range. When jets returned to base, the objects reappeared. The event repeated on July 26–27, attracting even larger radar tracks. The Air Force held a press conference — the largest since WWII — attributing the sightings to 'temperature inversion' causing radar ducting. Civil Aeronautics Administration technical staff publicly disputed this explanation as inconsistent with the radar presentation. The Project Blue Book special report on this event (now in the NARA archive set) notes that 'temperature inversions of the magnitude required to produce the observed radar returns were not present on either night.' The 2026 archive release includes previously unprocessed Air Defense Command scramble logs and the National Security Council briefing summary prepared for President Truman.

KEY CHARACTERISTICS
  • Tracked simultaneously on Washington National and Andrews AFB radar
  • USAF scrambles twice — objects vanished upon jet arrival
  • Objects returned each time jets returned to base
  • Civil aeronautics staff disputed official temperature inversion explanation
  • Project Blue Book special report acknowledged inversions were not present
  • NSC briefing prepared for President Truman — in 2026 archive release
ORIGINAL SOURCE

This incident is indexed as file DOD-011inside Now Declassified's research layer. The nearest official source trail for this agency points to NARA RG 615 / OSD, where archive records, imagery, or supporting context are published for public review.

OPEN OFFICIAL SOURCE CONTEXT →
INCIDENT DATA
FILE IDDOD-011
DATE1952-07-19
YEAR1952
AGENCYDoD
LOCATIONWashington D.C. / Capitol Airspace, USA
REGIONNorth America
SHAPEDisc / Saucer
ALTITUDE~7,000 ft
DURATION~6 hours (July 19–20); repeated July 26–27, 1952
WITNESSESWashington National Airport radar controllers, Civil Aeronautics Administration, USAF Air Defense Command pilots, commercial airline crew
OBSERVED BEHAVIORS
Formation / Group
Rapid Acceleration
Instant Disappearance
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