Among the nearly 3,000 people killed in the 9/11 terror attacks, Mychal Judge, a Catholic chaplain with New York's fire department, left a uniquely complex legacy that continues to evolve 20 years after his death. Some of his many admirers point to Judge -- a gay man who devoted himself to ministering to vulnerable populations such as the homeless or people with HIV/AIDS -- as a reason for the U.S. Catholic Church to be more welcoming to LGBTQ people.