Roll of Honor
Lyndon Joel Cosgriff-Flax
Incident
Master-at-Arms 3rd Class LJ Cosgriff-Flax died when he fell overboard while conducting training at Naval Weapons Station Yorktown in Yorktown, Virginia.
He was conducting familiarization training on the York River with his harbor security boat team when he fell overboard at about 8:05 pm. MA3 Cosgriff-Flax suffered fatal injuries during the incident.
MA3 Cosgriff-Flax had been stationed at NWS Yorktown for two years.
Survivors
He is survived by his mother, father and stepmother, brother, sister, and grandparents.
In Our Keeping
- Permanent identifier
BO-US-FED-6E1BFAD4- Stewardship
- Maintained by NeuraWeb Global Inc.
- Added to badge.nw
- April 2, 2026
- Last updated
- July 23, 2026
Honored here by 1 sentinel - 1 tribute.
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Tributes
I served 1985 to 1993. You served too, before the badge - different uniform, same idea. You go where you are sent and you do not get to pick the call.
Master-at-Arms Cosgriff-Flax gave the United States Navy Security Forces 2 years.
Thank you for your service. Gone but never to be forgotten.
Rest easy, brother.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
Military Service
Lyndon Joel Cosgriff-Flax served in the United States military before joining law enforcement. Full service record available on salute.nw.
Master-at-Arms Lyndon Joel Cosgriff-Flax is one of 10,088 officers lost to accidents in the line of duty across the full record of this memorial — 31% of all 32,508 officers honored here.
In IN, 151 of 503 officers were lost to accidents in the line of duty — 30% of this state's fallen. That is 1 percentage points below the national rate of 31%.
At United States Navy Security Forces, 1 of 3 officers on record were lost to accidents in the line of duty — 33.3% of this agency's fallen.
National Cause Distribution
How Accident compares to all causes of officer death in the memorial record. Lyndon Joel Cosgriff-Flax's cause is highlighted.
How Lyndon Joel Cosgriff-Flax Compares
When Accident Deaths Occur
Monthly distribution of Accident deaths across the full memorial record. Lyndon Joel Cosgriff-Flax is highlighted in Apr.
Incident Location
Others Who Wore This Badge
2 officers from United States Navy Security Forces are honored on badge.nw.
