Sister Deirdre Byrne is an active missionary sister and superior, a board-certified family practitioner and general surgeon. She retired with the rank of Colonel from the United States Army in 2009 after 29 years of service in the military. A native of the Washington, D.C., area, Sister Deirdre (known to many as Sister DeDe) followed in her thoracic surgeon father’s footsteps and entered medical school at Georgetown University, where she eventually completed a surgical residency. During that time, she also joined the Army. After a life of medical and military service in far ranging areas, she eventually was led to the Little Workers of the Sacred Hearts community whose charism involved performing overseas medical missionary work and providing free medical care for the poor and uninsured. The over 100-year-old community includes 400-500 members. By 2000, the board-certified Dr. Deirdre Byrne made her commitment to the Little Workers and began her novitiate training in earnest. Over the years, Sister Deirdre has found it easy to integrate her medical and military service into her religious vocation. Though comfortable in scrubs, she wears a full black or a white working habit when she can, and is grateful for the impact it has on those to whom she ministers. Sister Deirdre's other charitable medical/surgical service includes hands-on ministry in the rubble of the twin towers following the terrorist attack on 9-11, and annual medical missions in Kenya, Haiti and Sudan. She currently acts as the clinic director of the Spanish Catholic Center, serving the uninsured in the Washington Diocese. She is also a general surgeon who works through the clinic to serve those in need and is the superior of the D.C. Little Workers of the Sacred Hearts house.