CHIANG MAI, Thailand- Royal Thai Marine Staff Sgt. Chavalit Sirimongmon and Royal Thai Army Sgt. Supatchai Bangsiri assemble a water charge, a type of explosive for breaching during Dynamic Entry practical application Feb. 2 during Exercise Cobra Gold 2009. Cobra Gold is a regularly scheduled joint/coalition multinational exercise and is the latest in the continuing series of U.S.-Thai military exercises designed to ensure regional peace and stability. This exercise also strengthens the Royal Thai government's self defense abilities and their capability to respond to regional contingencies.