President Barack Obama said Friday that an American citizen, Quinn Lucas Schansman, was on board Malaysia Airlines Flight 17 when it was shot down over Ukraine on Thursday. Schansman had dual Dutch-U.S. citizenship, according to the State Department. A friend who attended high school with Schansman told NBC News he was born in New York City but had lived in the Netherlands most of his life. "We were very, very sad yesterday, couldn't believe it," said Ronald Schansman, Quinn's grandfather. Obama said the missile that downed the commercial jet with 298 people on board was fired from a separatist-held location in Ukraine, but that it was too early to determine exactly who ordered the strike and why.