Mission Report D35: UAP Sighting Over Greek Waters, October 2023

Source file: dow-uap-d35-mission-report-greece-october-2023.pdf Originating agency: Department of Defense / DoD Modern UAP — USCENTCOM Date range: 28-29 October 2023 Page count: 7 (all reviewed) High-significance pages: Page 1 (primary narrative and UAP sighting), Page 6 (detailed UAP data), Page 7 (event description and closing narrative)

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Official Blurb (from war.gov)

This document is a Mission Report (MISREP), a standardized reporting form the U.S. Military uses to record the circumstances surrounding its operations. U.S. military services often use MISREPs to report Unidentified Anomalous Phenomena (UAP) to AARO. The GENTEXT, or "general text" section of these reports often contains important qualitative, contextual information, distinguishing it from the more quantitative, or numerical, data found elsewhere in the report. A U.S. military operator reported observing a UAP "flying just above the surface of the ocean." The report describes the UAP as "[flying] straight above the ocean towards lands." All descriptive and estimative language contained in this report reflects the reporter's subjective interpretation at the time of the event. Such characterizations should not be interpreted as a conclusive indication of the presence or absence of any intrinsic object features or performance characteristics.

Summary

On 28-29 October 2023 an unmanned U.S. Air Force aircraft assigned to the 33rd Special Operations Squadron (SOS), operating under Air Force Special Operations Command (AFSOC) and U.S. Central Command (USCENTCOM), executed an intelligence, surveillance, and reconnaissance (ISR) mission from base LGLR in Greece. While returning to base near 08:11Z on 29 October, the aircraft's sensor crew observed an unidentified anomalous phenomenon (UAP) flying low over the sea toward land. The event was documented and assessed "Benign," yet a full report was still filed. Total mission duration was 20 hours and 1 minute.

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Research Article

Introduction

Document D35 is a Mission Report (MISREP number 9337873) submitted by the U.S. Air Force's 33rd SOS. The report was classified at an unknown level and released to the public on 22 January 2026 by Lieutenant Colonel Richard A. Harrison, USCENTCOM Chief of Staff, under MDR 26-0019. The automatic declassification date was set at 28 October 2048.

The report describes an ISR mission flown from base LGLR in Greece per an Air Tasking Order (ATO) and under the 603rd Air Operations Center. It is the second document from Greece for the October 2023 window, alongside D33, which also reported activity in the area.

Mission details

The classified aircraft (type and tail number marked as 1.4a) took off from base LGLR on 28 October 2023 at 15:04Z. At 15:15Z control was transferred from the Launch and Recovery Element (LRE), after which the aircraft proceeded to its classified tasking.

At 16:18Z the aircraft was placed into a "7-line" to support classified target data. At 20:18Z it arrived on station and conducted Full Motion Video (FMV) and SIGINT collection at coordinates 36S YC 40[REDACTED] 57[REDACTED]. The ISR mission included Target Development activity.

From 20:19Z to 22:43Z the aircraft flew Pattern of Life (POL) collection on several Centers of Interest (COI). At 22:44Z six vehicles were observed on a parking-structure roof with no visible personnel. Activity continued through 05:42Z on 29 October.

The aircraft landed at 11:05Z on 29 October and shut down its engines at 11:15Z. Total mission duration was 20 hours and 1 minute, of which 9 hours and 24 minutes were on station.

The UAP incident

During its return to base, on 29 October 2023 at 08:11Z, the aircraft observed one possible UAP. Per the event narrative: while RTB (returning to base), the aircrew identified a UAP flying just above the surface of the ocean water. The UAP flew straight above the water toward land. At 08:11Z, that same second, the aircraft lost the UAP from its feed.

The UAP description: "SEEMINGLY CIRCULAR, TOO SMALL TO MAKE OUT DETAILS."

The full data of the UAP event as recorded in the official report:

• Initial contact date and time: 29 October 2023, 08:11Z
• Event type: UAP Incident
• Friendly aircraft location: 35SMV3[REDACTED] (Mediterranean / Greece area)
• UAP speed: 30 MPH (approximately 48 km/h)
• Physical state: Solid
• Propulsion means: Unknown (UNK)
• Manipulative motion measurement: None observed (NONE)
• Response to observation: Unknown (UNK)
• Under intelligent control: No (NO)
• UAP signatures: None (NONE)
• Advanced capabilities: Unknown (UNK)
• RF frequency: Unknown (UNK)
• Effects on people: No (NO)
• Items collected: No (NO)
• Effects on equipment: None (NONE)
• Observer assessment: Benign

Mission equipment

The aircraft carried advanced ISR equipment:

• Primary sensor: FMV (Full Motion Video)
• Additional sensors: G-MESH
• Targeting pod: AN/DAS-4
• Additional avionics: AH/GMESH
• Data link: LINK 16
• Armament: 2 × AGM-114R9E and 2 × AGM-114R2 (Hellfire) missiles

Comparison with report D33

Both D33 and D35 cover ISR activity from Greece in October 2023, but there are substantive differences. D35 stands out because an actual UAP sighting occurred during the mission, which is not necessarily a feature of D33. In D35 the UAP was observed during RTB (return to base) rather than during the mission proper, indicating the sighting was incidental rather than part of the tasking. The D35 UAP was assessed Benign, with no response to observation and no measurable signatures, distinguishing it from other, more complex incidents. Nonetheless, the requirement to file a formal UAP report shows the event was taken seriously.

Significance

Document D35 is important for several reasons. First, it shows that special operations ISR aircraft conducted robust routine surveillance from the Greece and Mediterranean area in October 2023, a sensitive period (coinciding with the outbreak of the Gaza conflict on 7 October 2023). Second, the description of a UAP flying low over the sea toward land and then suddenly disappearing from the aircraft's feed raises questions about possible evasive capability, even though the observer classified the event as Benign. Third, the report demonstrates the standard formal protocol that existed for UAP reporting within USCENTCOM forces in 2023.

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Key People

Role	Detail
MG Richard A. Harrison	USCENTCOM Chief of Staff; responsible for release of the report (22 January 2026)
POC (primary point of contact)	Rank A1C, name redacted, 56 SOIS, 27 SOW Wing, 609 AOC Det 1
QC (quality control)	Rank SrA, name redacted, 27 SOW Wing, 609 CAOC
APPROVER	Rank A1C, name redacted
Submitting unit	33 SOS (Special Operations Squadron)

Locations

Location	Description
LGLR	Air base in Greece (launch and recovery base)
36S YC 40[REDACTED] 57[REDACTED]	Coordinates of the area where the ISR mission was conducted
35SMV3[REDACTED]	Aircraft location at the time of the UAP sighting
Mediterranean / Greek waters	General mission area

Incidents

Incident	Date	Location	Pages
Takeoff from LGLR	28 October 2023, 15:04Z	LGLR, Greece	1, 4
Arrival on station, start ISR/FMV	28 October 2023, 20:18Z	36S YC 40[REDACTED]	1, 5
POL on multiple COI	20:19Z-22:43Z, 28 October	Mission area	5
Six vehicles observed on parking-structure roof	22:44Z, 28 October	COI area	5
UAP sighting — circular object over the sea	29 October 2023, 08:11Z	35SMV3[REDACTED]	1, 6, 7
Loss of contact with the UAP	29 October 2023, 08:11Z	Sea area	7
Landing at LGLR	29 October 2023, 11:05Z	LGLR, Greece	1, 4

Notable Quotes

"AT 0811Z, [REDACTED] WAS RTB WHEN THEY SPOTTED A UAP FLYING JUST ABOVE THE SURFACE OF THE OCEAN WATER. THE UAP FLEW STRAIGHT ABOVE THE OCEAN TOWARDS LANDS. AT 0811Z, [REDACTED] LOST THE UAP FROM THEIR FEED." — Page 7

"SEEMINGLY CIRCULAR, TOO SMALL TO MAKE OUT DETAILS" — Page 7, UAP description

"AT 0811Z, [REDACTED] OBSERVED 1X POSS UAP (SEE UAP 1)." — Page 1, primary narrative

"Observer Assessment of UAP: Benign" — Page 6, observer assessment