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U.S. Army Pfc. Ayden Walk, a rifleman with Bravo Company, 5th Battalion, 20th Infantry Regiment, 1-2 Stryker Brigade Combat Team, and two Royal Thai Army soldiers with 1st Infantry Battalion, 15th Infantry Regiment, practice clearing a room during Close Quarters Combat training, as part of Exercise Cobra Gold 21, in Krabi, Kingdom of Thailand, Aug. 4, 2021. Exercise Cobra Gold, now in its 40th year, is a Thai-US co-sponsored training event that builds on the longstanding friendship between the two allied nations and promotes regional peace and security in support of a free and open Indo-Pacific. This year’s exercise has been carefully modified to mitigate the risks of the ongoing COVID-19 pandemic. Walk is a native of Firestone, Colorado.