How does Elroy Berdahl save tim O'Brien?

Elroy Berdahl saves Tim O'Brien by providing him with a safe space and the financial means to avoid the Vietnam War draft. During a pivotal moment at the Tip Top Lodge, Elroy offers O'Brien a chance to reflect on his choices and confront his fears about going to war. By engaging in silent understanding and offering O'Brien a job, he creates an environment where O'Brien can ultimately make a decision about his own life. This act of kindness and support allows O'Brien to explore his options and the implications of his decisions.