Sergeant Major Vargas enlisted in the United States Marine Corps in October 1996, attending Recruit Training at MCRD San Diego, California. Upon completion of Recruit Training, he received training at the Marine Combat Training Battalion at Camp Pendleton, California. Sergeant Major Vargas was ordered to Combat Service Support Schools in Camp Lejeune, North Carolina where he earned the primary Military Occupational Specialty of 0151 and was meritoriously promoted to Lance Corporal.
In July of 1997, Sergeant Major Vargas reported to Marine Aviation Logistics Squadron 39, Camp Pendleton, California. In October of 1998, he transferred to Marine Medium Helicopter Squadron 166, MCAS El Toro, California. During his tour, he deployed with the 15th Marine Expeditionary Unit in support of OPERATION RESTORE HOPE in East Timor and OPERATION SOUTHERN WATCH in Kuwait. In December of 2000, Sergeant Major Vargas attended Marine Security Guard School in Quantico, Virginia. Upon graduation, he was ordered to American Embassy, Monrovia, Liberia. In May of 2002, Sergeant Major Vargas was transferred to the American Embassy, Canberra, Australia.
In October of 2003, Sergeant Major Vargas received orders to Marine Heavy Helicopter Squadron 466, MCAS Miramar, California. Shortly after his check-in, he deployed to Iraq in support of OPERATION IRAQI FREEDOM (OIF). In September of 2005, Sergeant Major Vargas once again deployed with the squadron back to Iraq to support OIF.
In July of 2006, Sergeant Major Vargas reported to Drill Instructor School, Marine Corps Recruit Depot San Diego, California and served as a Junior Drill Instructor, Senior Drill Instructor, Chief Drill Instructor and Company First Sergeant. In August of 2009, Sergeant Major Vargas received orders to 9th Engineer Support Battalion, 3d Marine Logistics Group, Okinawa, Japan. Sergeant Major Vargas reported to 3d Supply Battalion, 3d Marine Logistics Group, Okinawa, Japan in January 2010. While assigned to 3d Supply Battalion he served as the Headquarters and Service Company and Supply Company First Sergeant.
In May of 2012 Sergeant Major Vargas received orders to 3d Combat Engineer Battalion, 1st Marine Division in 29 Palms, California. He deployed as the Company First Sergeant of Bravo Company for OPERATIONS ENDURING FREEDOM 13.1/13.2 in support of Regimental Combat Team 7 and Regional Command Southwest. In February of 2014 Sergeant Major Vargas assumed the duties as the Battalion Sergeant Major until the deactivation of the unit that summer.
In July of 2014 Sergeant Major Vargas was assigned to Force Company, 1st Reconnaissance Battalion, 1st Marine Division, Camp Pendleton California. In May of 2015 he assumed the duties of the Battalion Sergeant Major until his transfer. In December of 2015, Sergeant Major Vargas reported for duty as the Battalion Sergeant Major for 2nd Battalion, 4th Marines. He deployed in April 2016 with the "Magnificent Bastards" to Okinawa, Japan as the Battalion Landing Team for the 31st Marine Expeditionary Unit. In August of 2017, Sergeant Major Vargas was assigned as the Recruiting Station Sergeant Major for Recruiting Stations Oklahoma City, Oklahoma.
Sergeant Major Vargas has a Associates of Arts degree in Interdisciplinary Studies from American Military University.
Sergeant Major Vargas' personal awards include the Meritorious Service Medal (4th Award), Navy and Marine Corps Commendation Medal (3rd award) and the Navy and Marine Corps Achievement Medal (2nd award).