Petty Officer 1st Class Sean Terry, a resident of Oakland, Calif., explains the importance of math and applying it to search and rescue situations during a presentation to a class of students at Dzantiki'I Heeni Middle School in Juneau Friday, Jan. 7, 2011. Terry is a search and rescue controller in the 17th Coast Guard District rescue coordination center in Juneau. U.S. Coast Guard photo by Petty Officer 3rd Class Walter Shinn.
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