Roll of Honor
Incident
Trooper Marty Mack and Trooper Branden Sisca were struck and killed by a suspected drunk driver near mile marker 18 on southbound I-95 in Philadelphia shortly before 1:00 am.
They had stopped a female driver for speeding and had interacted with her for less than one minute when they were notified of a pedestrian walking along the interstate. Due to their short interaction before being dispatched to the higher priority pedestrian call, the troopers had not observed any signs of impairment before giving her a warning. They then responded to the pedestrian call and located the man on the interstate. They were assisting him into the back of their patrol vehicle when an approaching car drove by and attempted to pass the police vehicle on the shoulder. The vehicle fatally struck both troopers and the pedestrian they were assisting.
The driver who struck them pleaded guilty to three counts each of third-degree murder and homicide by vehicle while driving under the influence and was sentenced to 27 1/2 to 60 years in prison. She was the same driver that had been pulled over by the troopers several minutes earlier.
Trooper Mack was a Pennsylvania Army National Guard veteran and had served with the Pennsylvania State Police for 7 1/2 years.
Survivors
He was assigned to Troop K and is survived by his wife and two children.
In Our Keeping
- Permanent identifier
BO-US-PA-EC0E911A- Stewardship
- Maintained by NeuraWeb Global Inc.
- Added to badge.nw
- August 2, 2026
- Last updated
- August 2, 2026
Honored here by 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.
Trooper Mack gave the Pennsylvania State Police 7 years.
Thank you for your service to the people of Pennsylvania. Thank you for your service before it. Gone but never to be forgotten.
Rest easy, brother.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
Military Service
Martin Francis Mack III served in the U.S. Army before joining law enforcement.
Trooper Martin Francis Mack III is one of 1 officers killed feloniously — deliberately targeted and murdered in the line of duty across the full record of this memorial — 0% of all 97,759 officers honored here.
In PA, 597 of 1,261 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 47.3% of this state's fallen. That is 47.3 percentage points above the national rate of 0%.
At Pennsylvania State Police, 34 of 87 officers on record were killed feloniously — deliberately targeted and murdered in the line of duty — 39.1% of this agency's fallen.
National Cause Distribution
How Felonious compares to all causes of officer death in the memorial record. Martin Francis Mack III's cause is highlighted.
How Martin Francis Mack III Compares
When Felonious Deaths Occur
Monthly distribution of Felonious deaths across the full memorial record. Martin Francis Mack III is highlighted in Mar.
Weapons Used Against Officers
Most common weapons in felonious officer deaths. Martin Francis Mack III was killed by automobile; alcohol involved.
Incident Location
Military Service
Martin Francis Mack III served in the U.S. Army before joining law enforcement.
Visit Martin Francis Mack III’s page on salute.nw →
His full service record — units, decorations, where he served — is kept on salute.nw.
Others Who Wore This Badge
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