U.S. Army Task Force Naga Soldiers with 2nd Battalion, 9th Infantry Regiment, 1st Armored Brigade Combat Team, 2nd Infantry Division from Camp Casey, Republic of Korea, and Royal Thai Army soldiers assigned to 1st Battalion, 7th Regiment, detonate a small door-breaching device during a field training event as part of Exercise Cobra Gold 2013 at Phitsanulok, Kingdom of Thailand, Feb. 12, 2013. Cobra Gold is the largest multinational exercise in the Asia-Pacific region that provides the Kingdom of Thailand, United States, Singapore, Japan, Republic of Korea, Indonesia and Malaysia an opportunity to maintain relationships and enhance interoperability.