An instructor with the Marine Corps Engineer Society teaches Marines with Headquarters and Service Company, 1st Battalion, 5th Marine Regiment, 1st Marine Division, how to inspect for hazardous chemicals during searchers and site exploitation training aboard Marine Corps Base Camp Pendleton, Calif., Oct. 27-29, 2015. The three-day training period provided 1/5 personnel with instruction on how to identify threats within a designated area and conduct systematic searches using appropriate detection equipment. (U.S. Marine Corps photo by Cpl. Demetrius Morgan/RELEASED) - An instructor with the Marine Corps Engineer Society teaches Marines with Headquarters and Service Company, 1st Battalion, 5th Marine Regiment, 1st Marine Division, how to inspect for hazardous chemicals during searchers and site exploitation training aboard Marine Corps Base Camp Pendleton, Calif., Oct. 27-29, 2015. The three-day training period provided 1/5 personnel with instruction on how to identify threats within a designated area and conduct systematic searches using appropriate detection equipment. (U.S. Marine Corps photo by Cpl. Demetrius Morgan/RELEASED)

Marines with Alpha Company, 1st Battalion, 5th Marine Regiment provide security on the beach following an amphibious landing as part of Exercise Dawn Blitz 2015 at Marine Corps Base Camp Pendleton, Calif., Sept. 5, 2015. Dawn Blitz is a multinational, amphibious training exercise designed to hone the amphibious landing skills of I Marine Expeditionary Brigade, Expeditionary Strike Group Three and allies of the United States. - Marines with Alpha Company, 1st Battalion, 5th Marine Regiment provide security on the beach following an amphibious landing as part of Exercise Dawn Blitz 2015 at Marine Corps Base Camp Pendleton, Calif., Sept. 5, 2015. Dawn Blitz is a multinational, amphibious training exercise designed to hone the amphibious landing skills of I Marine Expeditionary Brigade, Expeditionary Strike Group Three and allies of the United States.

Lance Cpl. Hayden Parker, rifleman, Alpha Company, 1st Battalion, 5th Marine Regiment, and a native of Florence, Ariz., provides security for his fire team during an Urban Operations exercise at Marine Corps Base Camp Pendleton, Calif., Jan. 9, 2014. The training area tested the Marines’ knowledge and skills on operations in austere conditions. The range portrayed how an urban battlefield may look in a combat environment. (U.S. Marine Corps photo by Lance Cpl. Christopher J. Moore/Released) - Lance Cpl. Hayden Parker, rifleman, Alpha Company, 1st Battalion, 5th Marine Regiment, and a native of Florence, Ariz., provides security for his fire team during an Urban Operations exercise at Marine Corps Base Camp Pendleton, Calif., Jan. 9, 2014. The training area tested the Marines’ knowledge and skills on operations in austere conditions. The range portrayed how an urban battlefield may look in a combat environment. (U.S. Marine Corps photo by Lance Cpl. Christopher J. Moore/Released)

Marines with 1st Tank Battalion provide security during a mechanized raid in support of Exercise Steel Knight 2014 at Marine Corps Air Ground Combat Center Twentynine Palms, Calif., Dec. 13, 2013. The assault utilized both air and ground elements to eliminate their objective. Steel Knight is an annual exercise that includes elements from the entire I Marine Expeditionary Force (MEF). The exercise focuses on conventional operations and provides realistic training that prepares Marines for overseas operations. (U.S. Marine Corps photo by Cpl. James Gulliver/Released) - Marines with 1st Tank Battalion provide security during a mechanized raid in support of Exercise Steel Knight 2014 at Marine Corps Air Ground Combat Center Twentynine Palms, Calif., Dec. 13, 2013. The assault utilized both air and ground elements to eliminate their objective. Steel Knight is an annual exercise that includes elements from the entire I Marine Expeditionary Force (MEF). The exercise focuses on conventional operations and provides realistic training that prepares Marines for overseas operations. (U.S. Marine Corps photo by Cpl. James Gulliver/Released)

Major Gen. Lawrence Nicholson, commanding general, 1st Marine Division, congratulates Sgt. Matthew T. Woodall, former squad leader, Bravo Company, 1st Battalion, 5th Marine Regiment, after awarding him the Silver Star Medal during an award ceremony at the Camp San Mateo parade deck here, Aug. 2, 2013. Woodall, a native of Paducah, Ky., earned the nation's third highest military award for valor for his actions in Helmand province, Afghanistan, in support of Operation Enduring Freedom. A platoon-sized enemy force attacked Woodall and his Marines from several fortified positions during a security patrol mission in the Sangin district of Helmand, July 10 through 11, 2011. His daring actions ultimately defeated the enemy attack, killing four insurgents and wounding many others. - Major Gen. Lawrence Nicholson, commanding general, 1st Marine Division, congratulates Sgt. Matthew T. Woodall, former squad leader, Bravo Company, 1st Battalion, 5th Marine Regiment, after awarding him the Silver Star Medal during an award ceremony at the Camp San Mateo parade deck here, Aug. 2, 2013. Woodall, a native of Paducah, Ky., earned the nation's third highest military award for valor for his actions in Helmand province, Afghanistan, in support of Operation Enduring Freedom. A platoon-sized enemy force attacked Woodall and his Marines from several fortified positions during a security patrol mission in the Sangin district of Helmand, July 10 through 11, 2011. His daring actions ultimately defeated the enemy attack, killing four insurgents and wounding many others.

Lt. Col. Terry Johnson, (Left) the outgoing commanding officer of 1st Battalion, 5th Marine Regiment, passes the battalion colors to Lt. Col. Keven Matthews, (center) the incoming commanding officer of the battalion, during a change of command ceremony at Camp San Mateo parade deck here, June 28, 2013. Matthews, a native of Honolulu, assumed command of the battalion from, Johnson, a native of Palo Pinto, Texas. - Lt. Col. Terry Johnson, (Left) the outgoing commanding officer of 1st Battalion, 5th Marine Regiment, passes the battalion colors to Lt. Col. Keven Matthews, (center) the incoming commanding officer of the battalion, during a change of command ceremony at Camp San Mateo parade deck here, June 28, 2013. Matthews, a native of Honolulu, assumed command of the battalion from, Johnson, a native of Palo Pinto, Texas.

The family of Cpl. Gurpreet Singh stands in silence as the National Anthem plays during an award ceremony here, May 30, 2013. Singh, a native of Punjab, India, was awarded the Bronze Star with Combat "V" for valor posthumously for heroic service in Afghanistan. After immigrating to Sacramento, Calif., when he was 10, Singh enlisted as a rifleman in the Marine Corps when he turned 17, and went on to serve two combat deployments with Bravo Company, 1st Battalion, 5th Marine Regiment. As stated in his award citation, Singh aggressively led his Marines on daily combat patrols through insurgent infested areas in Sangin district, Helmand province, Afghanistan. Despite being struck in his front body armor by small-arms fire during a firefight on June 4, 2011, he remained undeterred and continued to lead his Marines. On June 22, 2011, while leading his Marines through a dangerous area, Singh was struck down by enemy fire. - The family of Cpl. Gurpreet Singh stands in silence as the National Anthem plays during an award ceremony here, May 30, 2013. Singh, a native of Punjab, India, was awarded the Bronze Star with Combat "V" for valor posthumously for heroic service in Afghanistan. After immigrating to Sacramento, Calif., when he was 10, Singh enlisted as a rifleman in the Marine Corps when he turned 17, and went on to serve two combat deployments with Bravo Company, 1st Battalion, 5th Marine Regiment. As stated in his award citation, Singh aggressively led his Marines on daily combat patrols through insurgent infested areas in Sangin district, Helmand province, Afghanistan. Despite being struck in his front body armor by small-arms fire during a firefight on June 4, 2011, he remained undeterred and continued to lead his Marines. On June 22, 2011, while leading his Marines through a dangerous area, Singh was struck down by enemy fire.