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Lance Cpl. Elijah Gums, a rifleman with Battalion Landing Team, 3rd Battalion, 5th Marines, carries a notional casualty during Military Operations in Urbanized Terrain (MOUT) training at Andersen South Air Force Base, Guam, August 30, 2017. Marines with BLT 3/5 train regularly in different environments to maintain their readiness as the Ground Combat Element of the 31st Marine Expeditionary Unit. The 31st MEU partners with the Navy's Amphibious Squadron 11 to form the Bonhomme Richard Expeditionary Strike Group, providing a cohesive blue-green team capable of accomplishing a variety of missions across the Indo-Asia-Pacific region. (U.S. Marine Corps photo by Cpl. Amaia Unanue/Released)

Photo by Cpl. Amaia Unanue

A Marine with Battalion Landing Team, 3rd Battalion, 5th Marines, sets security during Military Operations in Urbanized Terrain (MOUT) training at Andersen South Air Force Base, Guam, August 30, 2017. Marines with BLT 3/5 train regularly in different environments to maintain their readiness as the Ground Combat Element of the 31st Marine Expeditionary Unit. The 31st MEU partners with the Navy's Amphibious Squadron 11 to form the Bonhomme Richard Expeditionary Strike Group, providing a cohesive blue-green team capable of accomplishing a variety of missions across the Indo-Asia-Pacific region. (U.S. Marine Corps photo by Cpl. Amaia Unanue/Released)

Photo by Cpl. Amaia Unanue

A Marine with Battalion Landing Team, 3rd Battalion, 5th Marines, sets security during Military Operations in Urbanized Terrain (MOUT) training at Andersen South Air Force Base, Guam, August 30, 2017. Marines with BLT 3/5 train regularly in different environments to maintain their readiness as the Ground Combat Element of the 31st Marine Expeditionary Unit. The 31st MEU partners with the Navy's Amphibious Squadron 11 to form the Bonhomme Richard Expeditionary Strike Group, providing a cohesive blue-green team capable of accomplishing a variety of missions across the Indo-Asia-Pacific region. (U.S. Marine Corps photo by Cpl. Amaia Unanue/Released)

Photo by Cpl. Amaia Unanue

Marines with Battalion Landing Team, 3rd Battalion, 5th Marines, prepare to patrol in the rain during Military Operations in Urbanized Terrain (MOUT) training at Andersen South Air Force Base, Guam, August 30, 2017. Marines with BLT 3/5 train regularly in different environments to maintain their readiness as the Ground Combat Element of the 31st Marine Expeditionary Unit. The 31st MEU partners with the Navy's Amphibious Squadron 11 to form the Bonhomme Richard Expeditionary Strike Group, providing a cohesive blue-green team capable of accomplishing a variety of missions across the Indo-Asia-Pacific region. (U.S. Marine Corps photo by Cpl. Amaia Unanue/Released)

Photo by Cpl. Amaia Unanue

A Marine with Battalion Landing Team, 3rd Battalion, 5th Marines, patrols in the rain during Military Operations in Urbanized Terrain (MOUT) training at Andersen South Air Force Base, Guam, August 30, 2017. Marines with BLT 3/5 train regularly in different environments to maintain their readiness as the Ground Combat Element of the 31st Marine Expeditionary Unit. The 31st MEU partners with the Navy's Amphibious Squadron 11 to form the Bonhomme Richard Expeditionary Strike Group, providing a cohesive blue-green team capable of accomplishing a variety of missions across the Indo-Asia-Pacific region. (U.S. Marine Corps photo by Cpl. Amaia Unanue/Released)

Photo by Cpl. Amaia Unanue

A Marine with Battalion Landing Team, 3rd Battalion, 5th Marines, takes a break before starting a patrol in the rain during Military Operations in Urbanized Terrain (MOUT) training at Andersen South Air Force Base, Guam, August 30, 2017. Marines with BLT 3/5 train regularly in different environments to maintain their readiness as the Ground Combat Element of the 31st Marine Expeditionary Unit.The 31st MEU partners with the Navy's Amphibious Squadron 11 to form the Bonhomme Richard Expeditionary Strike Group, providing a cohesive blue-green team capable of accomplishing a variety of missions across the Indo-Asia-Pacific region. (U.S. Marine Corps photo by Cpl. Amaia Unanue/Released)

Photo by Cpl. Amaia Unanue

Cpl. Shaun Chamberlin, a team leader with India Company, Battalion Landing Team, 3rd Battalion, 5th Marines, clears a room during Military Operations in Urbanized Terrain (MOUT) training at Andersen South Air Force Base, Guam, August 30, 2017. Marines with BLT 3/5 train regularly in different environments to maintain their readiness as the Ground Combat Element of the 31st Marine Expeditionary Unit. The 31st MEU partners with the Navy's Amphibious Squadron 11 to form the Bonhomme Richard Expeditionary Strike Group, providing a cohesive blue-green team capable of accomplishing a variety of missions across the Indo-Asia-Pacific region.

Photo by Cpl. Amaia Unanue

Lance Cpl. Elijah Gums, a rifleman with India Company, Battalion Landing Team, 3rd Battalion, 5th Marines, briefs another Marine on the plan to clear an abandoned building during Military Operations in Urbanized Terrain (MOUT) training at Andersen South Air Force Base, Guam, August 30, 2017. Marines with BLT 3/5 train regularly in different environments to maintain their readiness as the Ground Combat Element of the 31st Marine Expeditionary Unit. The 31st MEU partners with the Navy's Amphibious Squadron 11 to form the Bonhomme Richard Expeditionary Strike Group, providing a cohesive blue-green team capable of accomplishing a variety of missions across the Indo-Asia-Pacific region.

Photo by Cpl. Amaia Unanue

Lance Cpl. Stephen A. Stauffer, a rifleman with Battalion Landing Team, 3rd Battalion, 5th Marines, takes a break during Military Operations in Urbanized Terrain (MOUT) training at Andersen South Air Force Base, Guam, August 30, 2017. Marines with BLT 3/5 train regularly in different environments to maintain their readiness as the Ground Combat Element of the 31st Marine Expeditionary Unit. The 31st MEU partners with the Navy's Amphibious Squadron 11 to form the Bonhomme Richard Expeditionary Strike Group, providing a cohesive blue-green team capable of accomplishing a variety of missions across the Indo-Asia-Pacific region.

Photo by Cpl. Amaia Unanue

Marines with Battalion Landing Team, 3rd Battalion, 5th Marines, clear an abandoned house during Military Operations in Urbanized Terrain (MOUT) training at Andersen South Air Force Base, Guam, August 30, 2017. Marines with BLT 3/5 train regularly in different environments to maintain their readiness as the Ground Combat Element of the 31st Marine Expeditionary Unit. The 31st MEU partners with the Navy's Amphibious Squadron 11 to form the Bonhomme Richard Expeditionary Strike Group, providing a cohesive blue-green team capable of accomplishing a variety of missions across the Indo-Asia-Pacific region.

Photo by Cpl. Amaia Unanue

Lance Cpl. Elijah Gums, a rifleman with Battalion Landing Team, 3rd Battalion, 5th Marines, carries a notional casualty during Military Operations in Urbanized Terrain (MOUT) training at Andersen South Air Force Base, Guam, August 30, 2017. Marines with BLT 3/5 train regularly in different environments to maintain their readiness as the Ground Combat Element of the 31st Marine Expeditionary Unit. The 31st MEU partners with the Navy's Amphibious Squadron 11 to form the Bonhomme Richard Expeditionary Strike Group, providing a cohesive blue-green team capable of accomplishing a variety of missions across the Indo-Asia-Pacific region.

Photo by Cpl. Amaia Unanue

A Marine with Battalion Landing Team, 3rd Battalion, 5th Marines, takes a break before starting a patrol in the rain during Military Operations in Urbanized Terrain (MOUT) training at Andersen South Air Force Base, Guam, August 30, 2017. Marines with BLT 3/5 train regularly in different environments to maintain their readiness as the Ground Combat Element of the 31st Marine Expeditionary Unit.The 31st MEU partners with the Navy's Amphibious Squadron 11 to form the Bonhomme Richard Expeditionary Strike Group, providing a cohesive blue-green team capable of accomplishing a variety of missions across the Indo-Asia-Pacific region.

Photo by Cpl. Amaia Unanue

Marines with Battalion Landing Team, 3rd Battalion, 5th Marines, enter an abandoned building during Military Operations in Urbanized Terrain (MOUT) training at Andersen South Air Force Base, Guam, August 30, 2017. Marines with BLT 3/5 train regularly in different environments to maintain their readiness as the Ground Combat Element of the 31st Marine Expeditionary Unit. The 31st MEU partners with the Navy's Amphibious Squadron 11 to form the Bonhomme Richard Expeditionary Strike Group, providing a cohesive blue-green team capable of accomplishing a variety of missions across the Indo-Asia-Pacific region. (U.S. Marine Corps photo by Cpl. Amaia Unanue/Released)

Photo by Cpl. Amaia Unanue

Pfc. William Brooks, machine gunner, 2nd Battalion, 8th Marine Regiment, sights in his M240B during Mountain Training Exercise 4-17 aboard Marine Corps Mountain Warfare Training Center, Bridgeport, Calif., August 2, 2017. Marines with 2/8, based out of Marine Corps Base Camp Lejeune, N.C., conducted the training in preparation for an upcoming deployment. (U.S. Marine Corps photo by Pfc. Margaret Gale)

Photo by Pfc. Margaret Gale

Service members from several partner nations watch the closing ceremony of Exercise Talisman Saber 17 aboard the USS Ronald Reagan (CVN 76), ported in Brisbane, Queensland, Australia, July 25, 2017. Talisman Saber is a biennial exercise designed to improve the interoperability between Australian and U.S. forces. The 31st MEU is taking part in Talisman Saber 17 while deployed on a regularly-scheduled patrol of the Indo-Asia-Pacific region.

Photo by Staff Sgt. T. T. Parish

Col. Tye R. Wallace, left, Lt. Gen. Lawrence Nicholson, center, and U.S. Navy Capt. George Doyon, spend a few minutes speaking during the closing ceremony of Exercise Talisman Saber 17 aboard the USS Ronald Reagan (CVN 76), ported in Brisbane, Queensland, Australia, July 25, 2017. Wallace is the commanding officer of the 31st Marine Expeditionary Unit, Nicholson is the commanding general of III Marine Expeditionary Force, and Doyon is the commodore of Amphibious Squadron 11 and the Bonhomme Richard Expeditionary Strike Group. Talisman Saber is a biennial exercise designed to improve the interoperability between Australian and U.S. forces. The 31st MEU is taking part in Talisman Saber 17 while deployed on a regularly-scheduled patrol of the Indo-Asia-Pacific region. (U.S. Marine Corps photo by Staff Sgt. T. T. Parish/Released)

Photo by Staff Sgt. T. T. Parish

A 70mm Hydra rocket pod attached to an AH-1W Super Cobra helicopter is parked in a hagar during Integrated Training Exercise (ITX) 5-17 at Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., July 25, 2017. The purpose of ITX is to create a challenging, realistic training environment that produces combat-ready forces capable of operating as an integrated MAGTF. (U.S. Marine Corps Photo by SSgt. David L. Proffitt)

Photo by Staff Sgt. David Proffitt

A MK2 MOD 0 Talon robot is maneuvered by remote control to a mock improvised explosive device during an EOD training exercise aboard Marine Corps Air Station Cherry Point, N.C., July 21, 2017. The MK2 MOD 0 Talon robot is used by explosive ordnance technicians assigned to Marine Wing Support Squadron 271, Marine Aircraft Group 14, 2nd Marine Aircraft Wing and provides a safer way to investigate a suspected IED. (U.S. Marine Corps photo by Pfc. Skyler Pumphret/ Released)

Photo by Pfc. Ethan Pumphret

A Peruvian marine engages targets while conducting sniper rifle drills during UNITAS 2017 at Ancon, Peru, July 20, 2017. UNITAS is an annual, multinational exercise that focuses on strengthening existing regional partnerships and encourages establishing new relationships through the exchange of maritime mission-focused knowledge and expertise during multinational training operations. (U.S. Marine Corps photo by Lance Cpl. Taylor W. Cooper)

Photo by Lance Cpl. Taylor Cooper

A Peruvian marine engages targets while conducting sniper rifle drills during UNITAS 2017 at Ancon, Peru, July 20, 2017. UNITAS is an annual, multinational exercise that focuses on strengthening existing regional partnerships and encourages establishing new relationships through the exchange of maritime mission-focused knowledge and expertise during multinational training operations. (U.S. Marine Corps photo by Lance Cpl. Taylor W. Cooper)

Photo by Lance Cpl. Taylor Cooper