On the Monday following the Orlando massacre, 12 golden retrievers arrived in the Florida city. They had come to offer comfort to some of the victims of the attack, the families of those killed and the emergency medical workers. The animals are part of the K-9 Comfort Dogs team, a program run by the Lutheran Church Charities. Founded in 2008, the team has comforted victims of the 2013 Boston Marathon bombing and the 2012 Sandy Hook shooting. Tim Hetzner, the president of the charity, said that the dogs in Orlando were helping to provide a feeling of safety, allowing those in distress to relax their guard and express their vulnerability during a difficult time. Weve had a lot of people here that start petting the dog, and they break out crying, he said. The dogs and their 20 handlers have visited hospitals and churches, and attended vigils and memorial services. On Wednesday, they visited some of the hospitalized victims. People couldnt get out of their bed, so we had to bring the dog up so they could pet the dog while laying down, Mr. Hetzner said. They start smiling, and in a couple cases, they started talking as much as they could. Comfort dogs ... are often employed by therapists and medical doctors to help soothe patients. Studies have shown that they can help to reduce feelings of anxiety and depression as well as the symptoms of post-traumatic stress disorder. There are more than 120 dogs in the K-9 Comfort Dog unit, in 23 states. All of them have received extensive training similar to that of a service dog.