U.S. Marines Corps Gunnery Sgt. Douglas Cox, combat engineer operations chief with 4th Combat Engineer Battalion, 4th Marine Division, Marine Corps Forces Reserve, observes as a breaching charge detonates as part of Bright Star 23 at Mohamed Naguib Military Base, Egypt, Sept. 7, 2023. Bright Star 23 is a multilateral U.S. Central Command exercise held with the Arab Republic of Egypt across air, land, and sea domains that promotes and enhances regional security and cooperation, and improves interoperability in irregular warfare against hybrid threat scenarios. (U.S. Marine Corps photo by Lance Cpl. Samuel Qin)