TWENTYNINE PALMS, Calif. (Oct. 21, 2020) A Sailor assigned to Kilo Company, 3d Battalion, 3d Marines, attached to 4th Marine Regiment, creates a terrain model in support of the Battalion Distributed Operations Course during Service Level Training Exercise 1-21 at Marine Corps Air Ground Combat Center Twentynine Palms, Calif., Oct. 21, 2020. 3d Battalion, 3d Marines, conducted BDOC in preparation for Maneuver Warfare Exercise, demonstrating their technical and tactical proficiency during the regiment's operations. (U.S. Marine Corps photo by Lance Cpl. Juan Carpanzano)