U.S. Marines with Golf Company, 2nd Battalion, 23d Marine Regiment, 4th Marine Division, repel enemy assault during the final exercise of Mountain Training Exercise 4-23 at Marine Corps Mountain Warfare Training Center, Bridgeport, California, June 22, 2023. Marines undergo a 72 hour evaluation testing them in Tactics, Techniques and Procedures for mountain warfare. (U.S Marine Corps photo by Lance Cpl. Samwel Tabancay)