John “Jack” Geerer passed away peacefully on September 29, 2020 at the age of 87 of pneumonia. Jack was born on April 2, 1933, to Dorothy Brean Geerer and Jack Geerer in Boston, Mass. He graduated in 1950 from Rindge Technical High School in Cambridge where he was a national champion sprinter on their track team.

Upon graduation, Jack joined the United States Army, where he served honorably, and fortunately for future generations, broke his arm days before he was due to be shipped out to serve in the Korean War. Shortly thereafter, Jack enrolled at UCLA and was hired as an engineer by Parker Hannifin Aerospace Corporation where he remained until his retirement some 45 years later. While working for Parker, Jack was transferred from his home base of Los Angeles, Calif., to Connecticut. He and his wife, Betty Jane “BJ,” moved to Newtown in April of 1969 with their four children.

Jack was an avid reader, outdoorsman, athlete, woodworker, and Red Sox fan. He remained curious about everything until the very end. He was a kind man who never complained or had a negative thing to say about anyone. Jack was a longtime member of the Brotherhood of S.U.N.A., along with his lifelong dear friends. Jack will always be remembered for his great sense of humor, kindness, and willingness to lend a helping hand. He will be dearly missed by all who loved him.

Jack was predeceased by his wife, Betty Jane, and his infant son, Blaise Roberts Geerer. He was also predeceased by his younger siblings, Bob and Jane.

Jack is survived by countless friends, four children, and many grandchildren. They are: Kurt Geerer and wife, Robin, of Pepperell, Mass., and his son, Will Geerer; John “Chip” Geerer and his wife, Christine, of Harrison Township, Mich., and their children, Jack Geerer and his fiancé, Natalie Ferro, and Elizabeth Geerer Meier and her husband, Scott; Ellen Geerer McElroy and her husband, Stan, of Manhattan Beach, Calif.; and Kate Geerer of Newtown and her children, Danny, Jane, and John Sclafani, Diana Sclafani Muller and her husband, Bryan, and their sons, Brayden and Easton, and Melonie Sclafani Killeen and her husband, Michael.

Burial and services will be private.

In lieu of flowers, please always remember to be kind to one another and stay curious — as Jack did.