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U.S. Army Chief Warrant Officer 3 Teddy Nelson, Army Aviation Battalion Japan UH-60L standardization instructor pilot, answers questions to Japan Air Self-Defense Force members with the Iruma Air Base, during the Kanto Plain Mid-Air Collision and Avoidance Conference, at Yokota Air Base, Japan, April 15, 2017. The conference brought together military and civilian pilots from all over Japan to focus on flight safety and base flight procedures.