What is the full name of the person who commits suicide?  Answer the above question based on the context below:  In 1997, Rachel is honoured by her daughter Sarah during a release party in Tel Aviv for Sarah's book based on the account Rachel, Stefan and David gave of the events in 1965. Concurrently, David is escorted from his apartment by an Israeli government agent for a debriefing. David recognises Stefan waiting in another vehicle and unable to face their lie, he commits suicide by stepping in front of an oncoming truck. In 1965, a young Mossad agent Rachel Singer on her first field assignment arrives in East Berlin to meet with more experienced agents David Peretz and Stefan Gold. Their mission is to capture Nazi war criminal Dieter Vogel—infamously known as "The Surgeon of Birkenau" for his medical experiments on Jews during World War II—and bring him to Israel to face justice. Rachel and David present themselves as a married couple from Argentina and Rachel becomes a patient at Vogel's obstetrics and gynaecology clinic. At a doctor appointment, Rachel injects Vogel with a sedative during an examination and induces the nurse to believe that he has suffered a heart attack. Stefan and David arrive dressed as paramedics and make off with the unconscious Vogel in an ambulance. They attempt to leave by train, but Vogel awakens and sounds the horn of the van where he is being held, alerting guards to their presence. In the ensuing shootout, David sacrifices his chance to escape in order to save the compromised Rachel. The agents have no choice but to bring Vogel to their apartment and plan a new extraction.
Answer:
David Peretz