K-9 Officer Sean McNamee Gannon

August 22, 1985April 12, 2018

K-9 Officer Sean McNamee Gannon, Yarmouth PD, age 32, died in the line of duty on April 12th, 2018.

Born August 22nd, 1985 in New Bedford, MA, he graduated from All Saints Elementary School in 1999, and Bishop Stang High School in 2003. Gannon graduated with honors from Westfield State University in 2007 with a Bachelor of Science in Criminal Justice, a Master’s with honors from Massachusetts Maritime Academy with a degree in Emergency Management in 2011, and the MBTA Municipal Police Academy. Gannon’s internships included Nantucket Police, Westfield Police, and earned certifications as an EMT and Life Saving Instructor. Gannon started his career at Stonehill College in 2007 as a member of the Campus Police before joining the Yarmouth Police Department in 2010. Gannon was part of the Emergency Management Unit, a part-time member of the Proactive Anti-Crime Team, and he was the first K-9 narcotics officer for YPD. After retiring the K-9 narcotics officer, Gannon acquired the patrol dog who was also injured at the scene of the crime.

Sean leaves a legacy of high moral integrity, infectious humor, and collaborative work with colleagues. He enjoyed travel, working with his hands, donating his time to Big Brother/Big Sister and being outside. He loved spending time with his family and friends. Sean was deeply intuitive and inspired others to be there best selves.

Sean leaves his wife, Dara (Bryan), his parents, Patrick and Denise, his siblings, Timothy and his fiance Mary, Martha and her husband Derrick, his in-laws Kathy and Dean Bryan, and their son Ross, along with many relatives and friends.

Whatever Sean did, he gave 100% of himself. He will be profoundly missed by his family, colleagues, and friends.

Vigil for the Deceased and visitation will be on Tuesday, April 17th, 2018 from 4:00 PM - 8:00 PM at St. Pius X in South Yarmouth, MA. Mass of Christian Burial will be at 11:00 AM at St. Pius X Church, 5 Barbara St., South Yarmouth, MA on Wednesday, April 18th, 2018. Burial will be held privately.

The family deeply appreciates the incredible outpouring of local and national messages of support and condolences. The family particularly wishes to recognize the outstanding presence of the Yarmouth Police Department during this difficult ordeal. In lieu of flowers, please make a donation to Yarmouth Police Foundation or The Cape Cod Foundation. To leave an online condolence, please visit



  • Vigil for the deceased and visitation Tuesday, April 17, 2018
  • Mass of Christian Burial Wednesday, April 18, 2018


  • Burial will be Private

K-9 Officer Sean McNamee Gannon

have a memory or condolence to add?

Robin Mattson

April 23, 2018


I did not know Sean but I read about him through a friend's Facebook page. I live in Riverview, Fl. which is outside of Tampa.

I am so very sorry for your loss of Sean. The things I've read about him state what a wonderful human being he was and Lord knows, we need more of those here on earth!

We lost 2 of our officers in Tampa a number of years ago and while we didn't know them, it felt like it ripped a big hole in our community.

It's painful knowing the loss that the family and friends of Sean are experiencing..

I wanted to give my condolences and let you know that I care.

I am so very sorry...

Robin Mattson
Riverview, Fl.

M Nora O'Donoghue

April 20, 2018

Heartfelt condolences to the entire family

His life embodied all that was noble, humane and selfless.

To lose such an exemplar symbol at the hands of one , who was a living embodimt of evil underlines the grim irony of this tragedy.

His life should live onas a model to all young people transitioning to adulthood.

Requiam in pacem

M Nora O'Donoghue Dooley

Collette Pelletier Ranaudo

April 19, 2018

We are deeply saddened at the news of Sean's passing. We extend our heartfelt condolences and prayers.

Collette, Debbie and Ron Pelletier

Kim Kirkwood

April 19, 2018

Dear Gannon Family,my sincere sympathy,I never met Sean but as soon as I heard of what had happened I felt instant sadness and I just thought oh my God his poor family and Nero to I would like you all to know that I think Sean touched so many of us near and far,I thank him for his dedication and service,he had such a nice smile,I can't begin to imagine the loss you feel nor your pain,as I sat and watched online the funeral service I felt tears coming down my face I felt sad for you all and I will pray that God comfort you and in due time heal your hearts,Sean will never be to far away and he will be watching over all his family friends and Nero anyone who thinks animals don't understand things like death they absolutely do,I was so happy that Nero was able to go home today and I pray he brings Dara comfort and to all of you as well, I would like to say Gannon strong and Nero strong together they were quite a team. God Bless You and R.I.P. K-9 Officer and sargeant Sean Gannon you will not be forgotten and you most certainly up and beyond earned your angel wings.

Mary Ann Bell

April 18, 2018

My husband Bob and I want to express to Sean Gannon’s family how very sorry we are for the loss of their husband, son and brother. Our son is a Medford MA police officer and we know the danger he faces every day in carrying out his job. He loves his job, as I am sure that Sean also loved being an officer for the Yarmouth Police Department. We cannot begin to imagine your pain and suffering right now as you lose this courageous and loving young man. We have been glued to our television watching the wonderful tribute to him from police officers from all over our state and our country. He sacrificed his life doing what was right. We will pray for him and for you. My faith tells me that he is now with Jesus, and He is welcoming Sean into heaven to receive His unconditional love for all eternity.

Tony Nargi

April 17, 2018

May care and love of those around you provide comfort and peace to get you through the days ahead. Our most sincere condolences. The world needs more people like Sean.

Tony (SPD) and Dee Nargi

Erika Hanson Dwyer

April 17, 2018

Dara & the entire Gannon family, my deepest sympathy and condolences over the loss of Sean. I never personally had the pleasure of meeting or knowing him, but as a Stonehill alumni and native Cape Codder, I have many friends that knew him well. He is a true hero, and in his short time touched so many lives. My thoughts and prayers are with you all. I hope all the wonderful memories you all shared bring you comfort during this difficult time.

Krista Swanson

April 17, 2018

To the Gannon family,
Back about 4 years ago I met Sean. He lived in the same condo development as my mom on Buck Island Road. I met him because my mom had fallen outside and he had been there to help . He was very kind and caring . I was taken aback at how loyal he was to stay with her until I could come to her home. His character and thoughtfulness were really above and beyond. It seems most of his interactions were like that. He will not be forgotten. There are no words for your loss. May God bless and keep you all of your days. Krista Swanson❤

Barbara Jenney

April 17, 2018

Pat; (Denise & family)- We cannot begin to express how sorry we are for the loss of your son. We know there are no words that could comfort you during this difficult time, but please know that you are all in our thoughts and prayers. You have a beautiful family - please take care during this time.

Barbara & Don Jenney


April 17, 2018

To Dara , my son and i had the pleasure of meeting k9 officer Sean Gannon on many occasions at local community gatherings.He was a kind and caring Police officer with a wonderful humor about him .Made my son laugh as he joked with him.we saw him many times throughout the years here and now are very sad for your loss of a wonderful husband and friend and extended condolences go out to his mom and Dad sister and brother as well as his many friends and yarmouth pd. ,and ALL that keep us safe here.We are profoundly sorry to learn of Sean's passing as he was such a great person ! Godspeed Officer Sean Gannon you will be greatly missed along with your Gigantic smile and witty humour! So Tragic and sad gone too soon young over us as you did here.Sincerely JANINE DAHL