Master-at-Arms Lyndon Joel Cosgriff-Flax

Master-at-Arms Lyndon Joel Cosgriff-Flax

United States Navy Security Forces, U.S. Government

End of Watch Sunday, April 28, 2024

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Lyndon Joel Cosgriff-Flax

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. He is survived by his mother, father and stepmother, brother, sister, and grandparents.


  • Age 22
  • Tour 2 years
  • Badge Not available
  • Military Veteran

Incident Details

  • Cause Boating accident
  • Location Virginia

marine patrol, training


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Master at Arms Cosgriff-Flax, you dedicated your life to protecting others that they may be safe. Our Lord, who sees all and knows all, will reward you abundantly for your courage, dedication and selfless service. My heart breaks for the sorrow that your loved ones are experiencing. May God immerse you and them in His Divine Mercy. Rest in peace, good and faithful servant.

Jesus Espinosa

May 19, 2024

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