In 2016 in the middle of his IDF service, Eitan went to donate his stem cells. Israeli NGO Ezer Mizion found he was a match for Jack in Toronto who was dying from bone marrow cancer. His donated cells saved Jack’s life. 3 years later Eitan flew to Toronto to meet Jack.
https://www.cjnews.com/news/canada/idf-soldier-meets-canadian-whose-life-he-saved