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Debris surrounds the destroyed buildings of the Okawa Elementary School on March 03, 2012 in Ishinomaki, Japan. Last year, when the tsunami warning was sounded, the teachers weren't sure how best to evacuate the students. No one thought the tsunami would travel 4 km upriver. There was snow and the mountain behind the school was very steep. Of the 108 students, 74 died and three remain missing. Ten of the school's 13 teachers died. Some of the children who made it to the mountain wrapped their arms around trees; some were able to hang on and some were not.