John Heidecker

Celebrating the life of…..

John Pete Heidecker, beloved husband, father, grandfather, great grandfather and friend passed away on Thursday, December 25, 2025.

John was born on his family’s farm in Halliday, North Dakota, to Bill and Lena Heidecker. The second youngest of thirteen children, he remained closely connected to his family throughout his life, even while living at a distance. Today, his younger brother, Bob, is the only surviving sibling. John attended country school through the eighth grade and later earned his GED, along with additional educational certifications, while serving in the military—an early example of his lifelong commitment to learning, persistence, and self-improvement.

John proudly served in the United States Air Force for 31 years, entering service in 1953 and retiring as a Chief Master Sergeant in 1984. During his final 16 years, he held the title of Aircraft Maintenance Superintendent. Living by the Air Force motto, “Integrity First, Service Before Self, Excellence in All We Do," John was awarded the Republic of Vietnam Campaign Medal, the Meritorious Service Medal, two National Defense Service Medals, two Republic of Vietnam Service Medals, and two Air Force Good Conduct Medals—honors reflecting his exemplary character and dedication. John’s military career took him across the United States, with assignments in New York, Texas, Kansas, California, Montana, New Mexico, Arizona, Hawaii and ultimately his dream location—North Dakota. Internationally, he served in Thailand, Germany, the Azores, Africa, Norway, Spain, Italy, the Philippines, Guam and Greenland, completing three overseas tours during the Vietnam War.

John met his future wife, Theda, when she was just nine years old—they were neighbors in western North Dakota. Years later, they reconnected at a dance when Theda was 14. After one real date, they knew they wanted to be together and were married in 1958 in Merced, California, beginning a partnership that lasted nearly 68 years. While John served his country, Theda anchored their family through frequent moves and long separations, providing unwavering support as they built a life rooted in love and commitment together.

John is survived by his wife, Theda; and their children and families: Curt and Lori Heidecker; Cindy and Tom Arndorfer; Cathy and John (Emmet) Heiser. Grandchildren: Kasey (Jarid) Baumgartener, Miles (Jenna) Heidecker, Karissa (Shane) Kautzman, Brian Heiser, Michael (Peyton) Heiser. Extended Grandchildren: Shawn (Nici) Arndorfer, Seth Arndorfer, Sam (Brooke) Arndorfer. Great-Grandchildren: Brycen and Violet Baumgartener; McConaughy and Dutton Heidecker; Morrie Heiser; Tracen and Terren Kautzman; Mikayla (Kohen and Kaden) and Garret Arndorfer; Holden Meyer; Jace and Reese Arndorfer; Rylyn, Tatum, and Asher Arndorfer and brother Robert (Cindy) Heidecker as well as numerous nieces and nephews.

John was proceeded in death by his parents Bill and Lena Heidecker and his 11 older brothers and sisters.

John deeply valued the friendships he formed in the Arvilla and Larimore areas. He loved Brent (Janel) Trosen and Gerald (Lorie) Berthold, and their families, as his own. Along with Chuck (Cam) Behm, these families became an integral part of his life and stood faithfully by him through both the best and most challenging times of his later years.

John was especially proud to have four great-grandsons named after him——Michael John, McConaughy John, Terren John, and Morrie Pete—as well as Hunter Trosen’s son, John.

He treasured deep conversations, woodworking, butchering, cooking (especially pig roasts), long countryside drives with Theda, and friends stopping by for impromptu visits. He loved a good cigar, drinking beer, and living life fully. John Heidecker’s life was defined by service, family, and friendship. His legacy lives on through the many lives he touched, the lessons he taught, and the love he gave so freely.

SERVICES:   A Celebration of John’s Life will be held at 2:00 p.m. on Saturday, May 30, 2026, at the American Legion Club (Willy’s) in Larimore, ND. Burial will be held at 1:00 p.m. on Monday, June 1, 2026 at the North Dakota Veterans Cemetery in Mandan, ND.

Memorials received will be passed on to the North Dakota Veterans Honor Flight in John’s name.