When disaster occurs, Dr. Elizabeth Greig runs toward the chaos. She and her team follow in the wake of hurricanes, earthquakes and other hazardous events to help the world’s most vulnerable communities heal and rebuild. They provide medical care and essential resources, bolster infrastructure and strengthen the health sector. Sometimes, they construct buildings. As of April 2024, a hospital they helped erect in Port-au-Prince, Haiti, is still functioning despite the current gang violence.