John Harker ’97 has had a lifetime of service at sea and ashore. As Chief Warrant Officer (Ret.), John dedicated 22 years to the United States Coast Guard, serving in law enforcement, search and rescue, and homeland security missions across the globe. From counter-narcotics patrols in the Caribbean to securing New York Harbor after 9/11 and deployment to the Arabian Gulf during Operations Iraqi and Enduring Freedom, his early years set the tone for a career built on duty and resilience.

John rose through the ranks to command multiple Coast Guard units and capped off his military service as a subject matter expert at Sector Southeastern New England. After retiring in 2022, he transitioned to the private sector as Fisheries Affairs Manager for renewable energy company Avangrid, where he worked on offshore wind and global fisheries initiatives.

In March 2025, John returned to public service as Harbormaster for the town of Harwich on Cape Cod—fulfilling a lifelong dream. Today, he draws on decades of operational and leadership experience to protect and manage local waterways.

In honor of Veterans Day, read more about John’s service in the U.S. Coast Guard, and how that experience guided him to his current position.

What inspired you to join the United States Coast Guard, and what drew you to the specific mission of law enforcement, search and rescue, and Homeland Security? 
The Coast Guard always seemed intriguing and unique to me growing up. I would see it only occasionally—in the news, in movies, or tucked away in the corners of harbors—but it always appeared to be an exciting and rewarding career. During my teenage years, my curiosity deepened, and I began peeling back the layers of the service’s history, starting in 1915, when the Revenue Cutter Service and the Life-Saving Service merged to form the modern-day Coast Guard. I was fascinated by its evolution and the wide variety of missions it undertook, especially those in the late 1990s. The diversity and adaptability of the service truly impressed me.

That ultimately convinced me to enlist, initially with the common mindset of “just doing my four years and getting out.” But shortly after completing basic training in September 2000, the adventure began—and my life began to change in ways I hadn’t anticipated. Serving in a branch roughly the same size as the New York City Police Department, I quickly learned how versatile and adaptable one needs to be, and I started to see the range of opportunities available.

What ultimately drew me to the Coast Guard was this unique combination of missions, particularly the chance to grow within the fields of homeland security and law enforcement, all while contributing to vital life-saving operations.
 
What was the atmosphere like on the USCGC Spencer immediately following the 9/11 attacks, and how did that moment shift the focus of your mission and career?

We had returned less than a week earlier from a long and fast-paced 62-day patrol in the Caribbean and off the coast of South America, conducting counter-narcotics and migrant interdiction operations. We were mentally and physically recharging, knowing another 60-day patrol was scheduled to begin at the end of October.
 
When the attacks occurred, the crew immediately knew what had to be done. People were racing down the pier with mechanical parts to restore the cutter to full mission capability. Food and supplies were rushed aboard, even though no one knew how long we’d be gone or where we were heading. We left our families behind with no clear idea of what the coming days, weeks, or even months would hold.
 
Shortly after, we deployed to help secure Boston Harbor, only returning for less than 24 hours before heading back out—this time to New York City. Stationed at the entrance of the Ambrose Channel, we served as a checkpoint for the hundreds of vessels seeking to enter or exit the harbor. We remained there for nearly three months, boarding commercial vessels around the clock, without hesitation or pause. Those three months showed me just how capable and selfless we could be—both as individuals and as a service. That’s when I knew my career was only just beginning.

In what ways did your deployment to the Northern Arabian Gulf in support of Operations Iraqi and Enduring Freedom challenge you both professionally and personally? 
It was not an easy decision for me or my family. My sons were just 7 and 4 years old, and this was a voluntary deployment—not a requirement. However, my experiences following 9/11 had instilled in me a strong desire to serve both the Coast Guard and our country to the fullest, and I felt this was the right moment to do so.

During my year-long deployment, I had the privilege of working alongside dedicated members of the U.S. Armed Forces and coalition partners from around the world. The level of coordination, technical expertise, and mutual respect I witnessed was truly an extraordinary experience that few ever have. It was an honor that has stayed with me throughout my career, a story I’ve shared with my family, and a lesson that continues to shape my ambitions and dedication within the Coast Guard.

What motivated you to return to public service as the Harbormaster for Harwich?
If you know anything about Harbormaster positions in New England, you know they’re typically held for a long time. These roles rarely become available—and this particular one is a position I had been watching for over 10 years.
Becoming a Harbormaster was the perfect fit for me. It combined public service, community involvement, search and rescue, public safety, and the opportunity to truly become part of a local community. There was no better way for me to apply my experience, knowledge, and career aspirations than by serving as a Harbormaster in this region.

What are some of your fondest memories of your time at Berkshire? 
The story I share most often with family and friends is how, whenever I reconnect with a classmate or attend a reunion, the bond we formed more than 25 years ago still feels as strong as ever. The comfort, trust, and sense of family we built together under the Mountain—tossing frisbees between classes in the valley, forging camaraderie through sports on the ice and field, and sharing in memorable dorm-room antics—remain deeply ingrained in our hearts and minds.