At least three tourists have been found dead on separate Greek islands within a week, and several others are still missing. NewsNation speaks with Oliver Calibet, who visited Greece to search for his older brother and is vowing to bring him home. #Greece #Americantourist #missing Anchor Elizabeth Vargas delivers the biggest stories, without bias or opinion. Watch "Elizabeth Vargas Reports" every weeknight at 6p/5C on NewsNation. #VargasReports NewsNation is your source for fact-based, unbiased news for all America. More from NewsNation: newsnationnow.com Get our app: trib.al/TBXgYpp Find us on cable: trib.al/YDOpGyG How to watch on TV or streaming: trib.al/Vu0Ikij