 On my birthday, he made sure that I got a letter from him. And for other friends, he made sure that they would get their flowers on their birthday, you know, and he would ask us to do it. Despite his difficult circumstances, he thinks about us and what's going on in our world. Sauer says that Gershkovich is isolated from the outside world. He spends most of his days in a small jail cell with just one other cellmate.