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.

U.S. Marine Corps Lance Cpl. Bryan Mata, left, instructs Marines during a machine gun range on Range 7, Camp Hansen, Okinawa, Japan, June 20, 2019. During the range, Marines with Communications Company, Combat Logistics Regiment 37, 3rd Marine Logistics Group, trained to improve field communications skills while employing M249 light machine guns, M240B medium machine guns and .50 caliber machine guns. Mata, a native of Kearns, Utah, is a weapons instructor with Tactical Readiness and Training Platoon, CLR-37, 3rd MLG. (U.S. Marine Corps photo by Cpl. Joshua Pinkney) - U.S. Marine Corps Lance Cpl. Bryan Mata, left, instructs Marines during a machine gun range on Range 7, Camp Hansen, Okinawa, Japan, June 20, 2019. During the range, Marines with Communications Company, Combat Logistics Regiment 37, 3rd Marine Logistics Group, trained to improve field communications skills while employing M249 light machine guns, M240B medium machine guns and .50 caliber machine guns. Mata, a native of Kearns, Utah, is a weapons instructor with Tactical Readiness and Training Platoon, CLR-37, 3rd MLG. (U.S. Marine Corps photo by Cpl. Joshua Pinkney)

U.S. Marines assigned to the Maritime Raid Force, 26th Marine Expeditionary Unit, brace while an entrance is breached during Eager Lion at the King Abdullah II Special Operations Training Center, Jordan, April 18, 2018. As part of Eager Lion, U.S. Navy and Marine Corps assets practice and rehearse a range of critical capabilities available to U.S. Central Command both afloat and ashore to promote stability in the region. - U.S. Marines assigned to the Maritime Raid Force, 26th Marine Expeditionary Unit, brace while an entrance is breached during Eager Lion at the King Abdullah II Special Operations Training Center, Jordan, April 18, 2018. As part of Eager Lion, U.S. Navy and Marine Corps assets practice and rehearse a range of critical capabilities available to U.S. Central Command both afloat and ashore to promote stability in the region.

Cpl. Zachary Banning, a competitor with the Marine Corps Shooting Team, fires an M240B during the section match May 17, 2016 at Puckapunyal Military Area, Victoria, Australia. The event is part of Australian Army Skill at Arms Meeting 2016, a competitive marksmanship event that evaluates the shooting skills of the competitors. The section match consisted of two running portions and two firing portions where teams were evaluated on both skill and swiftness as a marksman. - Cpl. Zachary Banning, a competitor with the Marine Corps Shooting Team, fires an M240B during the section match May 17, 2016 at Puckapunyal Military Area, Victoria, Australia. The event is part of Australian Army Skill at Arms Meeting 2016, a competitive marksmanship event that evaluates the shooting skills of the competitors. The section match consisted of two running portions and two firing portions where teams were evaluated on both skill and swiftness as a marksman.

Marines with Marine Wing Headquarters Squadron (MWHS) 3 perform a simulated casualty evacuation during their Command Post Exercise aboard Marine Corps Air Station Miramar, California, Jan. 19. Marines with MWHS-3 participated in a three-day, two-night CPX designed to instill and improve field and tactical skills of the Headquarter Marines, Jan. 19-21. - Marines with Marine Wing Headquarters Squadron (MWHS) 3 perform a simulated casualty evacuation during their Command Post Exercise aboard Marine Corps Air Station Miramar, California, Jan. 19. Marines with MWHS-3 participated in a three-day, two-night CPX designed to instill and improve field and tactical skills of the Headquarter Marines, Jan. 19-21.

Marines conduct a barrel change for a Browning M2 .50-caliber machine gun during a weapons familiarization range at Marine Corps Base Camp Lejeune, North Carolina, Aug. 27, 2015. More than 100 Marines from Marine Air Support Squadron 1 honed their weapons skills with the M240B machinegun, Browning M2 .50-caliber machine gun and the M1014 combat shotgun. Marines from various military job occupations received hands-on experience that allows them to improve crucial skills and become well-rounded war fighters. - Marines conduct a barrel change for a Browning M2 .50-caliber machine gun during a weapons familiarization range at Marine Corps Base Camp Lejeune, North Carolina, Aug. 27, 2015. More than 100 Marines from Marine Air Support Squadron 1 honed their weapons skills with the M240B machinegun, Browning M2 .50-caliber machine gun and the M1014 combat shotgun. Marines from various military job occupations received hands-on experience that allows them to improve crucial skills and become well-rounded war fighters.

Marines with 2nd Combat Engineer Battalion shoot an M249 Squad Automatic Weapon during a training exercise at range SR-7 aboard Camp Lejeune, N.C., April 6, 2015. Approximately 30 Marines from the battalion conduct a two-day, machine-gun range where they shoot the M249 SAW, the M240 Bravo medium machine gun, and the M2 .50-caliber heavy machine gun from both the mounted and un-mounted positions. - Marines with 2nd Combat Engineer Battalion shoot an M249 Squad Automatic Weapon during a training exercise at range SR-7 aboard Camp Lejeune, N.C., April 6, 2015. Approximately 30 Marines from the battalion conduct a two-day, machine-gun range where they shoot the M249 SAW, the M240 Bravo medium machine gun, and the M2 .50-caliber heavy machine gun from both the mounted and un-mounted positions.

Lance Cpl. Keenan Scott, reconnaissance member with Bravo Company, 2nd Reconnaissance Battalion and a native of Toronto, Ohio, performs a battlesight zero on his M240B machine gun at training area SR-8 aboard Camp Lejeune, N.C., March 12, 2015. Marines with the unit used M240B machine guns and M110 semi-automatic sniper systems during the aerial sniper and machine-gun familiarization fire. - Lance Cpl. Keenan Scott, reconnaissance member with Bravo Company, 2nd Reconnaissance Battalion and a native of Toronto, Ohio, performs a battlesight zero on his M240B machine gun at training area SR-8 aboard Camp Lejeune, N.C., March 12, 2015. Marines with the unit used M240B machine guns and M110 semi-automatic sniper systems during the aerial sniper and machine-gun familiarization fire.

Mortarmen with 2nd Battalion, 2nd Marine Regiment practiced sighting in on various non-moving targets using their primary weapon, the M224 60 mm Lightweight Company Mortar System at training area G-G aboard Camp Lejeune, N.C., Feb. 18, 2015. Marines with the unit participated in three days of training from Feb. 17-19. (U.S. Marine Corps photo by Cpl. Kirstin Merrimarahajara/released) - Mortarmen with 2nd Battalion, 2nd Marine Regiment practiced sighting in on various non-moving targets using their primary weapon, the M224 60 mm Lightweight Company Mortar System at training area G-G aboard Camp Lejeune, N.C., Feb. 18, 2015. Marines with the unit participated in three days of training from Feb. 17-19. (U.S. Marine Corps photo by Cpl. Kirstin Merrimarahajara/released)