Hospital Corpsman 2nd Class Robert Park, a combat trauma management instructor with the 1st Marine Division Surgeon’s Office, poses for a portrait aboard Marine Corps Base Camp Pendleton, Calif., April 7, 2016. Park teaches Sailors and Marines combat lifesaving skills and was recently selected as the I Marine Expeditionary Force Junior Sailor of the Year. - Hospital Corpsman 2nd Class Robert Park, a combat trauma management instructor with the 1st Marine Division Surgeon’s Office, poses for a portrait aboard Marine Corps Base Camp Pendleton, Calif., April 7, 2016. Park teaches Sailors and Marines combat lifesaving skills and was recently selected as the I Marine Expeditionary Force Junior Sailor of the Year.

MARINE CORPS BASE CAMP PENDLETON, Calif. – Marines shield themselves from a detonated explosive charge during an urban leaders course, Jan. 29, 2016. During the course, Marines learned four different types of charges used to make a safe entrance into an objective. This type of training allows Marines to practice for possible scenarios when they are deployed to combat zones anywhere on the globe. An instructor with 1st Combat Engineer Battalion, 1st Marine Division, taught this portion of the course to infantrymen of 1st MarDiv. (U.S. Marine Corps photo by Sgt. Emmanuel Ramos) - MARINE CORPS BASE CAMP PENDLETON, Calif. – Marines shield themselves from a detonated explosive charge during an urban leaders course, Jan. 29, 2016. During the course, Marines learned four different types of charges used to make a safe entrance into an objective. This type of training allows Marines to practice for possible scenarios when they are deployed to combat zones anywhere on the globe. An instructor with 1st Combat Engineer Battalion, 1st Marine Division, taught this portion of the course to infantrymen of 1st MarDiv. (U.S. Marine Corps photo by Sgt. Emmanuel Ramos)

Staff Sgt. James Case, the chief instructor of the Headquarters Battalion, 1st Marine Division Lance Corporal Seminar Leadership and Ethics Seminar, briefs students on the plan of the day after a combat conditioning session aboard Marine Corps Base Camp Pendleton, Calif., Jan. 27, 2016. The weeklong seminar focuses on preparing lance corporals physically and mentally to become successful noncommissioned officers, while building the foundation for the more difficult residential courses like Corporals Course and Sergeants Course. - Staff Sgt. James Case, the chief instructor of the Headquarters Battalion, 1st Marine Division Lance Corporal Seminar Leadership and Ethics Seminar, briefs students on the plan of the day after a combat conditioning session aboard Marine Corps Base Camp Pendleton, Calif., Jan. 27, 2016. The weeklong seminar focuses on preparing lance corporals physically and mentally to become successful noncommissioned officers, while building the foundation for the more difficult residential courses like Corporals Course and Sergeants Course.

Corporal Benjamin Stoflet, a field radio operator, assigned to Communications Company, Headquarters Battalion, 1st Marine Division, watches for simulated enemy contacts during phase three of Mountain Warfare Training Exercise 5-15 aboard Marine Corps Mountain Warfare Training Center Bridgeport, Calif., Sept. 21, 2015. Headquarters Battalion acted as the opposing force against 1st Battalion, 6th Marine Regiment, 2nd Marine Division for the field training exercise to give the Marines a realistic look at fighting in a mountainous terrain. (U.S. Marine Corps photo by Cpl. Will Perkins/Released) - Corporal Benjamin Stoflet, a field radio operator, assigned to Communications Company, Headquarters Battalion, 1st Marine Division, watches for simulated enemy contacts during phase three of Mountain Warfare Training Exercise 5-15 aboard Marine Corps Mountain Warfare Training Center Bridgeport, Calif., Sept. 21, 2015. Headquarters Battalion acted as the opposing force against 1st Battalion, 6th Marine Regiment, 2nd Marine Division for the field training exercise to give the Marines a realistic look at fighting in a mountainous terrain. (U.S. Marine Corps photo by Cpl. Will Perkins/Released)

Marines assigned to Communications Company, Headquarters Battalion, 1st Marine Division, belay Marines while practicing rock climbing operations during phase two of Mountain Warfare Training Exercise 5-15 aboard Marine Corps Mountain Warfare Training Center Bridgeport, Calif., Sept. 10, 2015. The training covered maneuvering throughout mountainous terrain features by rope climbing and rappelling as well as surviving in the rugged environment. (U.S. Marine Corps photo by Cpl. Will Perkins/Released) - Marines assigned to Communications Company, Headquarters Battalion, 1st Marine Division, belay Marines while practicing rock climbing operations during phase two of Mountain Warfare Training Exercise 5-15 aboard Marine Corps Mountain Warfare Training Center Bridgeport, Calif., Sept. 10, 2015. The training covered maneuvering throughout mountainous terrain features by rope climbing and rappelling as well as surviving in the rugged environment. (U.S. Marine Corps photo by Cpl. Will Perkins/Released)

Marines assigned to Headquarters Company, Headquarters Battalion, 1st Marine Division are taught the proper method of fastening a Marine to a litter system during phase one of Mountain Warfare Training Exercise 5-15 aboard Marine Corps Mountain Warfare Training Center Bridgeport, Calif., Sept. 6, 2015. Phase one of MTNEX required the Marines and Sailors to participate in hands-on instruction which gave them the necessary skills used to conduct the rest of the exercise and to survive the austere, mountainous environment. (U.S. Marine Corps photo by Cpl. Will Perkins/Released) - Marines assigned to Headquarters Company, Headquarters Battalion, 1st Marine Division are taught the proper method of fastening a Marine to a litter system during phase one of Mountain Warfare Training Exercise 5-15 aboard Marine Corps Mountain Warfare Training Center Bridgeport, Calif., Sept. 6, 2015. Phase one of MTNEX required the Marines and Sailors to participate in hands-on instruction which gave them the necessary skills used to conduct the rest of the exercise and to survive the austere, mountainous environment. (U.S. Marine Corps photo by Cpl. Will Perkins/Released)

Master Sgt. David Jarvis, a reconnaissance Marine with 1st Reconnaissance Battalion, and Capt. Patrick Zuber, a company commander for 1st Reconnaissance Battalion, are awarded for winning the 7th Annual Recon Challenge aboard Marine Corps Base Camp Pendleton, California, May 15, 2015. The Marines received this honor from Col. Christopher J. Williams, the commanding officer of School of Infantry-West, and Master Gunnery Sgt. Brian Yarolem, the operations chief for Reconnaissance Training Company and event coordinator. - Master Sgt. David Jarvis, a reconnaissance Marine with 1st Reconnaissance Battalion, and Capt. Patrick Zuber, a company commander for 1st Reconnaissance Battalion, are awarded for winning the 7th Annual Recon Challenge aboard Marine Corps Base Camp Pendleton, California, May 15, 2015. The Marines received this honor from Col. Christopher J. Williams, the commanding officer of School of Infantry-West, and Master Gunnery Sgt. Brian Yarolem, the operations chief for Reconnaissance Training Company and event coordinator.

Corporals Augusto R. Carlin and Deneaga D. McMillian, supply Marines with Headquarters Battalion, 1st Marine Division, take a moment during Exercise Desert Scimitar 2015 to take a photo before both Marines return home as the exercise comes to a close aboard Marine Corps Air Ground Combat Center Twentynine Palms, Calif., April 15, 2015 . Carlin was inspired to join the military by his grandfather, George Carlin, who was a general in the Peruvian army. Although he was originally inspired to join the military by his family, he never anticipated the family he would find in the Marine Corps. - Corporals Augusto R. Carlin and Deneaga D. McMillian, supply Marines with Headquarters Battalion, 1st Marine Division, take a moment during Exercise Desert Scimitar 2015 to take a photo before both Marines return home as the exercise comes to a close aboard Marine Corps Air Ground Combat Center Twentynine Palms, Calif., April 15, 2015 . Carlin was inspired to join the military by his grandfather, George Carlin, who was a general in the Peruvian army. Although he was originally inspired to join the military by his family, he never anticipated the family he would find in the Marine Corps.

Petty Officer 2nd Class Daniel Wagner, left, a hospital corpsman with Headquarters Battalion, 1st Marine Division, monitors Lance Cpl. Aaron Brown, a motor transport operator with the battalion, during a physical therapy session at Marine Corps Air Ground Combat Center Twentynine Palms, Calif., May 14, 2014. Wagner routinely improvises medical treatment while in the field. He understands the work tempo of the Marines requires the battalion aid station to be creative when continuing treatment for their patients. - Petty Officer 2nd Class Daniel Wagner, left, a hospital corpsman with Headquarters Battalion, 1st Marine Division, monitors Lance Cpl. Aaron Brown, a motor transport operator with the battalion, during a physical therapy session at Marine Corps Air Ground Combat Center Twentynine Palms, Calif., May 14, 2014. Wagner routinely improvises medical treatment while in the field. He understands the work tempo of the Marines requires the battalion aid station to be creative when continuing treatment for their patients.

Sergeant Misha Nassiri, ammunition technician, Headquarters Battalion, 1st Marine Division, won her first professional mixed martial arts fight Jan. 18, 2014 at Valley Center, Calif. Nassiri, a native of San Diego, won the match by technical knockout in the first 20 seconds of round one. - Sergeant Misha Nassiri, ammunition technician, Headquarters Battalion, 1st Marine Division, won her first professional mixed martial arts fight Jan. 18, 2014 at Valley Center, Calif. Nassiri, a native of San Diego, won the match by technical knockout in the first 20 seconds of round one.