Roll of Honor
Joseph Aloysius Mattingly, Jr.
Incident
Captain Joseph Mattingly was killed in an automobile crash while on patrol at approximately 3:30 a.m.
His Ford Taurus patrol car struck a tree on Bradley Boulevard, near I-495, in Bethesda. He was transported to Fairfax Inova Hospital in Fairfax, Virginia, where he succumbed to his injuries two hours later.
Captain Mattingly had served with the Montgomery County Police Department for 28 years.
Survivors
He is survived by his wife, four children, mother, seven siblings, and 24 nieces and nephews.
In Our Keeping
- Permanent identifier
BO-US-MD-543BF985- 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
28 years. You could have gone home.
Captain Mattingly gave the Montgomery County Police Department 28 years. Still answering calls at the end.
Thank you for your service to the Gaithersburg community. Gone but never to be forgotten.
Rest easy, Captain Mattingly.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
Captain Joseph Aloysius Mattingly, Jr. 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 MD, 140 of 377 officers were lost to accidents in the line of duty — 37.1% of this state's fallen. That is 6.1 percentage points above the national rate of 31%.
At Montgomery County Police Department, 9 of 21 officers on record were lost to accidents in the line of duty — 42.9% of this agency's fallen.
National Cause Distribution
How Accident compares to all causes of officer death in the memorial record. Joseph Aloysius Mattingly, Jr.'s cause is highlighted.
How Joseph Aloysius Mattingly, Jr. Compares
When Accident Deaths Occur
Monthly distribution of Accident deaths across the full memorial record. Joseph Aloysius Mattingly, Jr. is highlighted in Sep.
Incident Location
Others Who Wore This Badge
20 officers from Montgomery County Police Department are honored on badge.nw. Showing the 16 most recent.
