Two Chabad students traveled to the small Jewish community during their summer vacation. During their trip to Serbia they met an elderly Yugoslav Jew. He wanted to visit the cemetery where his father and grandfather were buried, but the cemetery was in the hills which were littered with Serbian landmines. Afraid to go alone, he would stand from afar and say a prayer.
The students accompanied him to the cemetery. He was so grateful and moved by the experience, that he asked if he could do something in the memory of his loved ones. They asked him if he would put on tefillin. He agreed to do so.