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U.S. Marine Corps Cpl. Calub Horton, a team leader with Echo Company, 2nd Battalion, 5th Marine Regiment, 1st Marine Division, patrols during a simulated airfield seizure for a mission rehearsal exercise as part of Exercise Steel Knight 23.2 at Marine Corps Base Camp Pendleton, California, Dec. 2, 2023. Steel Knight maintains and sharpens I Marine Expeditionary Force as America’s expeditionary force in readiness – organized, trained and equipped to respond to any crisis, anytime, anywhere. This exercise will certify 5th Marines to be forward-postured in Australia as Marine Rotational Force - Darwin, a six-month deployment during which Marines train with Australian allies and facilitate rapid response to crises and contingencies. Horton is a native of Kansas. (U.S. Marine Corps photo by Cpl. Migel A. Reynosa)