U.S. Marines with 1st Transportation Battalion, attached

U.S. Marines with 1st Transportation Battalion, attached to Combat Logistics Regiment 1, wear prototype uniforms while being briefed on their mission to establish forward communication in 29 Palms, California, Dec. 8th, 2019, during exercise Steel Knight. Steel Knight is an annual exercise that spans the western United States and California coast. It focuses on command and control capabilities, ground fires and maneuver warfare tactics, while testing Marines and sailors across a range of environments and preparing to counter aggression against a near-peer threat. (U.S. Marine Corps photo by Pfc. Ulises Salgado)