A New Jersey State Police sergeant from Howell has died after complications stemming from a work-related injury, state officials and family members confirmed.

Sgt. First Class Sean W. Acker died last Wednesday at the age of 48, according to Acting New Jersey State Police Superintendent David Sierotowicz.

Acker, who served with the New Jersey State Police for nearly two decades, was remembered by colleagues, family members, and community organizations as a dedicated public servant, instructor, and family man.

Born in Abington, Pennsylvania, Acker moved to Howell with his family as a child and grew up there, where he played sports and formed lasting friendships. He enlisted in the United States Air Force in 1998, attaining the rank of staff sergeant. During his military service, he became one of the first members of the Air Force Phoenix Ravens, an elite security unit responsible for protecting aircraft operating in high-threat environments.

After retiring from the Air Force, Acker joined the New Jersey State Police in 2006. During his career, he served as an instructor at the State Police Academy, where he trained and mentored hundreds of troopers. He later became head instructor for the academy’s physical training unit, a role in which he was widely respected for his discipline and leadership.

According to the Tunnel to Towers Foundation, the physical demands of the role — which included running recruits five to 10 miles per day — led to severe hip damage that required a double hip replacement. While preparing to return to full duty, Acker experienced further medical complications. A blood clot led to cardiac arrest and a pulmonary embolism, causing a traumatic brain injury. He spent the remainder of his life attempting to recover from those injuries.

His family said Acker faced that struggle with resilience and humility, maintaining his concern for others despite his condition.

Beyond his professional service, Acker was deeply involved in the Howell community. Howell Central Little League remembered him as both a former player and longtime volunteer coach who was known for being demanding but fair. League officials said he played a key role in mentoring young athletes, including coaching teams that won district and regional championships.

Acker is survived by his wife, Lisa, a retired captain with the New Jersey State Police, and their two children, Connor and Samantha. Family members described him as a devoted husband and father whose life was defined by integrity, service, and compassion.

State Police officials and community leaders said his legacy will endure through the troopers he trained, the players he coached, and the many lives he touched through his service and generosity.