CAMP ELMORE, Va.— The U.S. Marine Corps consists of individuals who are first to fight in the air, land, and sea. U.S. Marine Corps Cpl. Holden L. Mesimer was born in Salisbury, North Carolina, and is a Marine Air-Ground Task Force (MAGTF) planning specialist with Plans, Policies, and Operations South. Mesimer continually looks for opportunities to improve his efficiency in completing his job. “With our military occupational specialty (MOS), we see the basic commands and requirements.” Mesimer continued, “Especially at a force command you see it in the system from regiments, divisions, and assigned designated supplies for their demands.” As a MAGTF planner, Mesimer designs plans, policies, and functions for operations from various units. MAGTF planners track data from units as they deploy and redeploy then briefs situations and missions to higher enlisted and officers. He spends most of his day utilizing the Joint Operational Planning and Execution Systems (JOPES) to carry out the missions of the combatant commander. However, the use of the JOPES software limited Mesimers opportunity to actually experience the Marine Corps outside of his office. To further understand his responsibilities in planning and execution, Mesimer participated in his first tour aboard a naval ship, the USS Gunston Hall at Norfolk Naval Station.