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Lt. Col. Weilun Hsu, the 374th Aerospace Medicine Squadron optometry flight commander from Yokota Air Base, Japan, determines which glasses to prescribe a local during Pacific Angel 15-4 at Unggai Primary School in Papua New Guinea, June 1, 2015. The optometrists prescribed more than 200 glasses, allowing the locals to walk away seeing better than before. (U.S. Air Force photo/Staff Sgt. Marcus Morris)
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