Complex sentence: For reasons unknown to her, she received an honorable discharge from the military in 1945, traveling to Pasadena, California, where her family had relocated, with both her father and brothers securing work there at the Jet Propulsion Laboratory (JPL).
Split into simpler sentences: For reasons unknown to her, she received an honorable discharge from the military in 1945. To join her family, she traveled to Pasadena, California, where her father and brothers had found work at the Jet Propulsion Laboratory (JPL).