Colonel Dr. Carl Michael Walker dedicated his life to serving Canada with distinction as an aerospace medicine specialist, emergency physician, military leader, and mentor. His work advanced military medicine, search and rescue, aeromedical evacuation, and international collaboration, benefiting countless lives in Canada and around the world. Beyond his remarkable career, Carl was a devoted husband, proud father, loving brother, cherished friend, and respected colleague. He found joy in playing the piano, building projects at the family cottage, and spending time with those he loved. Carl’s legacy of compassion, humility, service, and excellence continues to inspire all who knew him.