Bob Charles Tieszen of Argyle, Texas, passed away on September 1, 2026. He was born on August 27, 1942, in Newton, Kansas, to Charles and Dorothy Tieszen.

Bob grew up in Newton and graduated from Newton High School, where he excelled in basketball, baseball, and track. He attended the University of Kansas (KU), where he was active in Air Force Reserve Officer Training Corps (ROTC), student government, and Sigma Alpha Epsilon fraternity. He graduated with a Bachelor of Arts in International Relations in 1964.

Bob met his future wife, Patricia (Patti) Behen, at KU, and they were married on September 12, 1964, in Kansas City, Kansas. They moved to Washington, D.C., in 1964, where Bob worked at the Pentagon for the Undersecretary of the Air Force. In 1965, he accepted a commission into the United States Air Force, and they moved to Chandler, Arizona. They were stationed at Williams Air Force Base, where Bob flew the T-37 and T-38 aircraft as both a student and instructor pilot on active duty until 1970, when they moved to Dallas.

In 1972, Bob began flying for Delta Airlines while continuing his service in the U.S. Air Force Reserve until 1978. He flew the OA-37 Dragonfly, a light-attack and forward-air-control observation aircraft, at Barksdale Air Force Base in Shreveport, Louisiana, and at Tinker Air Force Base in Oklahoma City, Oklahoma. During his career with Delta, Bob flew the DC-9, B-727, L-1011, B-757, and B-767 aircraft on both domestic and international routes. In November 2001, he retired after more than 29 years as a B-767 Captain.

In 1978, Bob and Patti built their dream home outside Sanger, Texas, where they raised their three children and resided until 2012, when they moved to Argyle. Bob was an avid outdoorsman who enjoyed hunting, fishing, shooting sports, skiiing, and golf. He also had many other interests and hobbies, including history, classic film, and coin collecting. Bob had a relentless work ethic instilled in him from his youth working on the Tieszen family wheat farm in Kansas. When he wasn’t flying, he spent much of his time tending to their 68-acre property in Sanger and running cattle. Bob and Patti shared a love of travel, and they spent their retirement years seeing the world.

Bob was a loving husband, father, grandfather, and friend, whose good nature and humor endeared him to so many. His was truly a life well-lived, and he will be greatly missed.

He is survived by his wife Patricia of nearly 62 years; his brother Dwayne (Mickey); his daughters Jennifer (Matt) of Flower Mound, Texas, and Sheridan (David) of Key Largo, Florida; his son Jeff (Paige) of Fort Worth, Texas; his six grandchildren, Zachary, Brenna, Noah, Drew, Jessica, and Kyle; and five great-grandchildren. He was preceded in death by his father, Charles Tieszen, and stepmother, Betty Tieszen; his mother, Dorothy Linn, and stepfather, Clint Linn; and his brother, James Tieszen.

The family will receive friends for visitation on Monday, September 7, from 5:00 to 7:00 P.M. at the DeBerry Funeral Home, 2025 West University Drive, Denton, Texas, with a service on Tuesday, September 8, at 10:00 A.M. at the DeBerry Funeral Home.

In lieu of flowers, the family suggests donations be made to Folds of Honor Foundation, a nonprofit organization that provides educational scholarships to the spouses and children of fallen or disabled military service members and first responders.