Dennis (Denny) Leroy Thisius, 82, passed away at home on September 3, 2023, in Marysville, California. Denny was born in St. Peter, Minnesota, to Kenneth and Adeline Thisius. He attended Mankato State College and earned a Bachelor of Science in Math and Physics. He had a distinguished career of over twenty years in the military. He was a Vietnam Veteran and a proud member of the 99 SRS/9 SRW as a U-2 pilot and instructor. He loved nice cars, fast motorcycles, and flying planes. He also enjoyed snow skiing, water skiing, and duck hunting. He was an avid football and basketball fan and never missed watching his teams play.

Denny is survived by his wife, Maria-Estela Thisius; daughters Chris (Eddie) Powell, Nicholle Henning (Jim Lindemuth) and Val (Matt) Morrissette; sister Peggy Hill; grandchildren Samantha (Bryant) Goebel; Grace (Austin) Kraack; Nathan Henning; Greta Henning and Wagner Morrissette; and his great-grandson, Dawson Kraack.  The family wishes to extend our sincere thanks to the team at Freedom Hospice and Interim Health, who provided excellent care and support to all of us.