Stephen Michael Klima was born on December 26, 1919. He had at least one brother, Joe. In 1940, he worked for the Civilian Conservation Corps in the Pacific Northwest, and on January 8, 1941, he enlisted in the United States Army. He served with Company F of the 16th Infantry Regiment at camps in the United States until the regiment went to England in July 1942. Klima later served in North Africa, where he was reported missing in action on March 22, 1943; he was officially listed as killed in action on April 9, 1943.
Stephen Klima's wife, Mary Veronica Samut of New York City, had one son, Stephen J. Klima (1942-1995). Mary Samut was the daughter of Maltese immigrants Thomas and Lena Samut and had at least three siblings: Violet, Edward, and Evelyn. Edward Samut served in the 505th Parachute Infantry Regiment at Fort Bragg, North Carolina, in 1946. Mary Samut Klima later married Alex Deans and lived in Ayer, Massachusetts.