A member of the Japan Ground Self Defense Force looks out the back of a CH-47JA Chinook helicopter during exercise Forest Light Eastern Army at Camp Soumagahara, Gunma Prefecture, Japan, Dec. 9. - A member of the Japan Ground Self Defense Force looks out the back of a CH-47JA Chinook helicopter during exercise Forest Light Eastern Army at Camp Soumagahara, Gunma Prefecture, Japan, Dec. 9.