Pennsylvania State Police, Pennsylvania
End of Watch Monday, March 21, 2022
Add to My HeroesMartin Francis Mack, III
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 National Guard veteran and had served with the Pennsylvania State Police for 7 1/2 years. He was assigned to Troop K and is survived by his wife and two children.
Bio
- Age 33
- Tour 7 years, 6 months
- Badge 12764
- Military Veteran
Incident Details
- Cause Vehicular assault
- Weapon Automobile; Alcohol involved
- Offender 27 1/2 to 60 years in prison
Most Recent Reflection
View all 101 Reflections“What you leave behind is not what is engraved in stone monuments, but what is woven into the lives of others.” – Pericles
Marty; I was thinking of you today. It has been a few years now that you have climbed the staircase. Thinking of the life you have lived and you have lived it well. As Mother Teresa said, “A life not lived for others is not a life.” You have lived your life well. I hope you have ran into my husband up there too.....Trooper Tim Colacci, NJ
Cousin to the fallen
Veronica Colacci
February 23, 2025
Recent LODD Deaths

Police Officer Gabriel Facio
Apache Junction Police Department, AZ
EOW: June 8, 2025

Police Officer Krystal Rivera
Chicago Police Department, IL
EOW: June 5, 2025

Sergeant J. D. White
Angleton Police Department, TX
EOW: June 1, 2025

Police Officer Timothy Ontiveros
Bloomfield Police Department, NM
EOW: June 1, 2025

Police Officer Samuel Riveros
Baldwin Park Police Department, CA
EOW: May 31, 2025

Deputy Sheriff Daniel Weston Sherrer
Morrow County Sheriff's Office, OH
EOW: May 26, 2025

Deputy Sheriff Nathaniel Ansay
Florence County Sheriff's Office, SC
EOW: May 20, 2025

Lieutenant Allen "Noochie" Credeur
Rayne Police Department, LA
EOW: May 5, 2025

Special Deputy Sheriff Larry Henderson, Jr.
Hamilton County Sheriff's Office, OH
EOW: May 2, 2025