▁to ▁collect ▁air ▁samples ." ▁ ▁On ▁November ▁ 2 3 , ▁ 2 0 1 0 , ▁San ke i ▁Sh imb un ▁reported ▁that ▁a ▁W C - 1 3 5 ▁had ▁been ▁moved ▁to ▁K ad ena ▁Air ▁Base ▁in ▁September ▁ 2 0 1 0 , ▁in ▁anticip ation ▁of ▁a ▁North ▁Korean ▁nuclear ▁test . ▁ ▁On ▁January ▁ 3 1 , ▁ 2 0 1 3 , ▁the ▁W C - 1 3 5 W ▁was ▁reported ▁to ▁be ▁conduct ing ▁surve ill ance ▁fl ights ▁out ▁of ▁K ad ena ▁Air ▁Base ▁in ▁anticip ation ▁of ▁another ▁North ▁Korean ▁nuclear ▁test . ▁ ▁On ▁January ▁ 6 , ▁ 2 0 1 6 , ▁the ▁United ▁States ▁Air ▁Force ▁confirmed ▁plans ▁to ▁soon ▁deploy ▁the ▁W C - 1 3 5 ▁to ▁test ▁for ▁radiation ▁near ▁North ▁Korea ▁to ▁examine ▁North ▁Korea ' s ▁claim ▁that ▁they ▁had ▁successfully ▁conducted ▁a ▁hydro gen - b omb ▁test ▁on ▁January ▁ 5 ▁( E ST ). ▁ ▁On ▁September ▁ 8 , ▁ 2 0 1 6 , ▁it ▁was ▁reported ▁that ▁the ▁W C - 1 3 5 ▁would ▁soon ▁begin ▁surve ill ance ▁fl ights ▁near ▁the ▁Korean ▁Pen ins ula ▁after ▁South ▁Korean ▁officials ▁confirmed ▁that ▁North ▁Korea ▁conducted ▁its ▁fifth ▁nuclear ▁test ▁at ▁approximately ▁ 0 : 3 0 ▁UTC . ▁ ▁On ▁April ▁ 1 2 , ▁ 2 0 1 7 , ▁it ▁was ▁deployed ▁to ▁Ok ina wa ▁amid ▁rising