Mack Defense

The Mack Defense M917A3 Heavy Dump Truck, a defense-grade vehicle built in Pennsylvania, has been entered into the PA Chamber’s “Coolest Thing Made in PA” competition. Voting is live at pachamber.org/coolestthing—show your support and help us take the win! #mackdefense

Built on over a century of Mack toughness, our vehicles are engineered to withstand the harshest conditions. From commercial reliability to battlefield resilience, this is Mack Defense. #mackdefense

Happy Birthday to the Seabees of the United States Naval Construction Battalions. #mackdefense

Celebrating the U.S. Navy Reserve - built on dedication, driven by service, and always combat ready. Happy Birthday. #mackdefense

This Women’s History Month, we honor the women who lead, build, and innovate - shaping industries, strengthening communities, and driving progress forward every day. #mackdefense #WomensHistoryMonth

Big congrats to Wes for winning the M917A3 HDT Diecast Replica at the 2026 Tactical Wheeled Vehicle Conference! Thanks to everyone who stopped by! #mackdefense

Mack Defense is honored to sponsor Veterans at the 4th Annual American Red Cross Lehigh Valley Heroes Breakfast. Hosted by the American Red Cross PA Rivers Chapter, this event celebrates veterans, service members, and community heroes who have demonstrated courage and compassion.

Efficiency isn’t optional in the field. We adapt proven commercial powertrains and systems to give military operators the performance they need while reducing lifecycle costs. #mackdefense #M917A3HDT

READ ARTICLE: Featured on 69WFMZ: $47M Fuels Mack Defense Heavy Dump Truck Build mackdefense.com/mack-defense-f… #mackdefense #militaryfunding

Remembering Four Chaplains Day #mackdefense

The Veteran Health Program at Valley Health Partners delivers coordinated, transformative care to veterans and their families in the Lehigh Valley. Mack Defense is honored to support this important work in recognition of those who have served our country. #MackDefense #VHPProud

READ ARTICLE: Mack Defense’s MTT Prototype Spotlighted By National Defense Magazine mackdefense.com/mack-defenses-… #NationalDefenseMagazine #DefenseNews #MackDefense

This week, join us at FedFleet, January 27–28, to learn about the new Pioneer and explore Mack Defense’s latest innovations in defense vehicles and fleet solutions—where commercial value meets military readiness. #mackdefense #fedfleet2026

Join us at FedFleet, January 27–28, to learn about the new Pioneer and explore Mack Defense’s latest innovations in defense vehicles and fleet solutions - where commercial value meets military readiness. hashtag#mackdefense hashtag#fedfleet

Today, as we honor Dr. Martin Luther King Jr., we reflect—much like the waters of the Reflecting Pool where he delivered his iconic “I Have a Dream” speech. His message of unity, courage, and service continues to guide and inspire us. #mackdefense

Join us at FedFleet, January 27–28, to learn about the new Pioneer and explore Mack Defense’s latest innovations in defense vehicles and fleet solutions—where commercial value meets military readiness. #mackdefense #fedfleet

Commercial performance drives military success. We transform high-value commercial technology into rugged, mission-ready military vehicles built to meet today’s toughest operational demands. #mackdefense #mackgranite

Looking ahead to the New Year with focus, integrity, and commitment. Mack Defense wishes you a successful year. #mackdefense

This season, we’re grateful for our community, our team, and all the moments that made this year special. Happy Holidays! #mackdefense

BUILT TO CLEAR THE WAY - Mack Granite® delivers serious winter performance with increased ground clearance, MP8 power, and plow-ready capability built for extreme conditions. Explore the lineup at mackdefense.com #mackdefense