U.S. Marines fire a High Mobility Artillery Rocket System during Exercise Rolling Thunder 21.2 on Fort Bragg, N.C., April 26. - U.S. Marines fire a High Mobility Artillery Rocket System during Exercise Rolling Thunder 21.2 on Fort Bragg, N.C., April 26.

Marine Corps Cpl. Justin Machado, left, and Lance Cpl. Losia V.A. Wilson, both riflemen assigned to Charlie Company, Battalion Landing Team 1/4, 15th Marine Expeditionary Unit, provide security after completing a simulated assault for a company-sized live-fire attack exercise during a theater amphibious combat rehearsal at Camp Buehring, Kuwait, Feb. 23. - Marine Corps Cpl. Justin Machado, left, and Lance Cpl. Losia V.A. Wilson, both riflemen assigned to Charlie Company, Battalion Landing Team 1/4, 15th Marine Expeditionary Unit, provide security after completing a simulated assault for a company-sized live-fire attack exercise during a theater amphibious combat rehearsal at Camp Buehring, Kuwait, Feb. 23.

A U.S. Marine posts security during an airfield assault and seizure simulation at Marine Corps Outlying Landing Field, Camp Davis, N.C., June 9. - A U.S. Marine posts security during an airfield assault and seizure simulation at Marine Corps Outlying Landing Field, Camp Davis, N.C., June 9.

Participants of the 2019 High Intensity Tactical Training Championship celebrate completing the competition, which spans over four days, and includes seven challenges testing the athletes’ physical and mental fortitude, aboard Marine Corps Base Quantico on Sept. 12, 2019. Competitors from all across the Marine Corps battle for the title of HITT Champion. - Participants of the 2019 High Intensity Tactical Training Championship celebrate completing the competition, which spans over four days, and includes seven challenges testing the athletes’ physical and mental fortitude, aboard Marine Corps Base Quantico on Sept. 12, 2019. Competitors from all across the Marine Corps battle for the title of HITT Champion.

U.S. Marines await to be inserted via MV-22 Ospreys during a company raid in Exercise Koolendong at Mount Bundey Training Area, NT, Australia, Aug. 23. - U.S. Marines await to be inserted via MV-22 Ospreys during a company raid in Exercise Koolendong at Mount Bundey Training Area, NT, Australia, Aug. 23.

Marines conducted live-fire ranges where they rehearsed rocket battle drills and fire team attacks. - Lance Cpl. Jonathan Whitfield, a fire team leader with 3rd Battalion, 6th Marine Regiment, 2nd Marine Division engages a target with an M27 Infantry Automatic Rifle during a Tactical Small Unit Leaders Course at Camp Lejeune, N.C., Jan. 16, 2017. Marines conducted live-fire ranges where they rehearsed rocket battle drills and fire team attacks. The Marines used the M72AS 21mm Trainer System, M72 Lightweight Anti-Tank Weapon, AT-4 rocket launcher, M203 grenade launcher, M32 grenade launcher and M27 Infantry Automatic Rifle.

Marines fire an illumination round from an M777A2 lightweight 155 mm during live-fire artillery training Sept. 1 at the Yausubetsu Maneuver Area in Hokkaido as part of Artillery Relocation Training Program 14-2. The illumination round is able to light a 1-by-1-kilometer grid square for two minutes. The Marines are with Battery B, 1st Battalion, 12th Marine Regiment, currently assigned to 3rd Battalion, 12th Marines, 3rd Marine Division, III Marine Expeditionary Force. - Marines fire an illumination round from an M777A2 lightweight 155 mm during live-fire artillery training Sept. 1 at the Yausubetsu Maneuver Area in Hokkaido as part of Artillery Relocation Training Program 14-2. The illumination round is able to light a 1-by-1-kilometer grid square for two minutes. The Marines are with Battery B, 1st Battalion, 12th Marine Regiment, currently assigned to 3rd Battalion, 12th Marines, 3rd Marine Division, III Marine Expeditionary Force.

Lance Cpl. Tevin Brown, an automatic rifleman with 2nd Battalion, 8th Marine Regiment, charges toward an objective during a platoon attack training event at Marine Corps Base Camp Lejeune, N.C., April 12, 2016. The training event afforded the Marines an opportunity to develop and improve their strategies under stressful combat situations. - Lance Cpl. Tevin Brown, an automatic rifleman with 2nd Battalion, 8th Marine Regiment, charges toward an objective during a platoon attack training event at Marine Corps Base Camp Lejeune, N.C., April 12, 2016. The training event afforded the Marines an opportunity to develop and improve their strategies under stressful combat situations.

A U.S. Marine with 2nd Low Altitude Air Defense Battalion, 2nd Marine Expeditionary Brigade fires the Stinger missile system during a live-fire event in Ørland, Norway, Feb. 24, 2016. The live-fire event was held in preparation for Exercise Cold Response 16, featuring 12 NATO allies and partner nations and approximately 16,000 troops. - A U.S. Marine with 2nd Low Altitude Air Defense Battalion, 2nd Marine Expeditionary Brigade fires the Stinger missile system during a live-fire event in Ørland, Norway, Feb. 24, 2016. The live-fire event was held in preparation for Exercise Cold Response 16, featuring 12 NATO allies and partner nations and approximately 16,000 troops.

A Marine with 3rd Battalion, 6th Marine Regiment, looks a through compass during a 60mm mortar live-fire range at Marine Corps Base Camp Lejeune, N.C., Nov. 19, 2015. Despite heavy rainfall and wind, the Marines completed the mortar shoot in order to retain and refine their skills with the weapons system and prove they could complete a fire mission under any conditions. - A Marine with 3rd Battalion, 6th Marine Regiment, looks a through compass during a 60mm mortar live-fire range at Marine Corps Base Camp Lejeune, N.C., Nov. 19, 2015. Despite heavy rainfall and wind, the Marines completed the mortar shoot in order to retain and refine their skills with the weapons system and prove they could complete a fire mission under any conditions.

Cpl. Anthony Payton, a field artillery cannoneer with Lima Battery, 2nd Battalion, 10th Marine Regiment, swabs an M777 Howitzer after it was fired during a live-fire exercise at Marine Corps Base Camp Lejeune, North Carolina, Sept. 30, 2015. This was the last exercise Lima conducted as a standalone battery. - Cpl. Anthony Payton, a field artillery cannoneer with Lima Battery, 2nd Battalion, 10th Marine Regiment, swabs an M777 Howitzer after it was fired during a live-fire exercise at Marine Corps Base Camp Lejeune, North Carolina, Sept. 30, 2015. This was the last exercise Lima conducted as a standalone battery.

Cpl. Kenneth Hack, a field radio operator with Combat Logistics Company 36, climbs over the high wall during Exercise Dragon Fire 2015 at Combined Arms Training Center Camp Fuji, Japan, July 12. This physical training plays a vital role in developing a combat mindset, which is being prepared for the mental and physical stresses adhered to a combat environment. This annual exercise is used to enhance the service members’ tactical skill sets taught to them in their initial training as well as develop a combat mindset. - Cpl. Kenneth Hack, a field radio operator with Combat Logistics Company 36, climbs over the high wall during Exercise Dragon Fire 2015 at Combined Arms Training Center Camp Fuji, Japan, July 12. This physical training plays a vital role in developing a combat mindset, which is being prepared for the mental and physical stresses adhered to a combat environment. This annual exercise is used to enhance the service members’ tactical skill sets taught to them in their initial training as well as develop a combat mindset.

Italian Marines exit an Amphibious Assault Vehicle from Kilo Company, Battalion Landing Team 3rd Battalion, 6th Marine Regiment, 24th Marine Expeditionary Unit, during bilateral platoon attack drills as part of Exercise Eager Lion 2015 in Jordan, May 11, 2015. Eager Lion is a recurring multinational exercise designed to strengthen military-to-military relationships, between partner nations and enhance regional security and stability. The 24th MEU is embarked on the ships of the Iwo Jima Amphibious Ready Group and deployed to maintain regional security in the U.S. 5th Fleet area of operations. - Italian Marines exit an Amphibious Assault Vehicle from Kilo Company, Battalion Landing Team 3rd Battalion, 6th Marine Regiment, 24th Marine Expeditionary Unit, during bilateral platoon attack drills as part of Exercise Eager Lion 2015 in Jordan, May 11, 2015. Eager Lion is a recurring multinational exercise designed to strengthen military-to-military relationships, between partner nations and enhance regional security and stability. The 24th MEU is embarked on the ships of the Iwo Jima Amphibious Ready Group and deployed to maintain regional security in the U.S. 5th Fleet area of operations.