Lt. Gen. Duane D. Thiessen answers a phone call at the field training exercise combat operations center in Sattahip, Kingdom of Thailand, Feb. 16. Thiessen visited the COC to meet service members and observe the workspace of those participating in Exercise Cobra Gold 2012. Cobra Gold is an annual Royal Thai and U.S. co-hosted multinational exercise designed to advance security throughout the Asia-Pacific region and enhance interoperability with participating nations. Thiessen is the commanding general of U.S. Marine Corps Forces, Pacific.