Marine veterans Jaclyn Halsey, Kasey Miller and Molly Zimmer pose for a photo after completing the 41st Marine Corps Marathon on Oct. 30, 2016 in Arlington, Va. The three girls went to boot camp together in 2009 and finished their service in 2012. They have been training virtually together over the past year to prepare for the marathon, where they met for the first time since 2012. - Marine veterans Jaclyn Halsey, Kasey Miller and Molly Zimmer pose for a photo after completing the 41st Marine Corps Marathon on Oct. 30, 2016 in Arlington, Va. The three girls went to boot camp together in 2009 and finished their service in 2012. They have been training virtually together over the past year to prepare for the marathon, where they met for the first time since 2012.

The families of Gunnery Sgt. Thomas J. Sullivan, Staff Sgt. David Wyatt, Sgt. Carson Holmquist, and Lance Cpl. Squire Wells, are presented the Purple Heart honoring the Marines sacrifice, at the Hunter Museum of American Art in Chattanooga, Tenn., April 20, 2016. The Marines were honored for giving their lives to protect others when they were attacked by a gunman at the Naval Operational Support Center and Marine Corps Reserve Center in Chattanooga on July 16, 2015. - The families of Gunnery Sgt. Thomas J. Sullivan, Staff Sgt. David Wyatt, Sgt. Carson Holmquist, and Lance Cpl. Squire Wells, are presented the Purple Heart honoring the Marines sacrifice, at the Hunter Museum of American Art in Chattanooga, Tenn., April 20, 2016. The Marines were honored for giving their lives to protect others when they were attacked by a gunman at the Naval Operational Support Center and Marine Corps Reserve Center in Chattanooga on July 16, 2015.

Senegalese soldiers learn how to use a pulley system and rope to remove an inert mortar round from the ground and move it safely to another spot in Bargny, Senegal March 8, 2016. The intent wasn’t to actually move the ordnance, rather to get the students familiar with different types of tools. Since Feb. 15, a group of explosive ordnance disposal technicians with Special-Purpose Marine Air-Ground Task Force Crisis Response-Africa, began assisting Senegalese engineers as part of the Humanitarian Mine Action Program through what is called a train-the-trainer course. - Senegalese soldiers learn how to use a pulley system and rope to remove an inert mortar round from the ground and move it safely to another spot in Bargny, Senegal March 8, 2016. The intent wasn’t to actually move the ordnance, rather to get the students familiar with different types of tools. Since Feb. 15, a group of explosive ordnance disposal technicians with Special-Purpose Marine Air-Ground Task Force Crisis Response-Africa, began assisting Senegalese engineers as part of the Humanitarian Mine Action Program through what is called a train-the-trainer course.

U.S. Marine Cpl. Dillon G. Gilmore, a light armored vehicle repairman with Light Armored Reconnaissance Company, Battalion Landing Team 2/6, 26th Marine Expeditionary Unit (MEU), wipes off his hands after cleaning an LAV engine aboard the amphibious assault ship USS Kearsarge Dec. 4, 2015. Repairmen with the company serviced an LAV engine with an oil leak. The 26th MEU is embarked on the Kearsarge Amphibious Ready Group and is deployed to maintain regional security in the U.S. 5th Fleet area of operations. - U.S. Marine Cpl. Dillon G. Gilmore, a light armored vehicle repairman with Light Armored Reconnaissance Company, Battalion Landing Team 2/6, 26th Marine Expeditionary Unit (MEU), wipes off his hands after cleaning an LAV engine aboard the amphibious assault ship USS Kearsarge Dec. 4, 2015. Repairmen with the company serviced an LAV engine with an oil leak. The 26th MEU is embarked on the Kearsarge Amphibious Ready Group and is deployed to maintain regional security in the U.S. 5th Fleet area of operations.

1st Battalion, 1st Marine Regiment infantrymen tactically move from building to building in a simulated combat zone during Exercise Steel Knight 2016 at Marine Corps Base Camp Pendleton, Calif., Dec. 4, 2015. 1st Marine Division has conducted Steel Knight for the past three years, making this the fourth iteration of the exercise. Steel Knight will test I Marine Expeditionary Force’s amphibious capabilities through realistic, scenario-driven training. - 1st Battalion, 1st Marine Regiment infantrymen tactically move from building to building in a simulated combat zone during Exercise Steel Knight 2016 at Marine Corps Base Camp Pendleton, Calif., Dec. 4, 2015. 1st Marine Division has conducted Steel Knight for the past three years, making this the fourth iteration of the exercise. Steel Knight will test I Marine Expeditionary Force’s amphibious capabilities through realistic, scenario-driven training.

The 26th Chief of Chaplains Rear Adm. Margaret G. Kibben presents the 33rd Assistant Commandant of the Marine Corps Gen. John M. Paxton Jr., center, the Church Pennant flown on the USS ESSEX as part of the 240th Anniversary of the Navy Chaplain Corps at Crawford Hall in Marine Barracks Washington, Dec. 3, 2015. - The 26th Chief of Chaplains Rear Adm. Margaret G. Kibben presents the 33rd Assistant Commandant of the Marine Corps Gen. John M. Paxton Jr., center, the Church Pennant flown on the USS ESSEX as part of the 240th Anniversary of the Navy Chaplain Corps at Crawford Hall in Marine Barracks Washington, Dec. 3, 2015.

A Marine Raider with 1st Marine Raider Battalion and two Marines with 2nd Combat Engineer Battalion prepare to clear a building during a night raid at the Combined Arms Collective Training Facility at Camp Shelby, Miss., Nov. 17. The raid was part of a 10-day exercise in the Gulf Coast region to maintain unit readiness. The 2nd CEB Marines participated in the U.S. Marine Corps Forces, Special Operations Command exercise to strengthen and enhance Special Operations Forces and Marine Air Ground Task Force interoperability. - A Marine Raider with 1st Marine Raider Battalion and two Marines with 2nd Combat Engineer Battalion prepare to clear a building during a night raid at the Combined Arms Collective Training Facility at Camp Shelby, Miss., Nov. 17. The raid was part of a 10-day exercise in the Gulf Coast region to maintain unit readiness. The 2nd CEB Marines participated in the U.S. Marine Corps Forces, Special Operations Command exercise to strengthen and enhance Special Operations Forces and Marine Air Ground Task Force interoperability.

U.S. Marine Pfc. Beto Chavarria sucks the blood from the head of a python in a jungle survival course during Malaysia-United States Amphibious Exercise 2015 in Tanduo, Malaysia on Nov. 11. Chavarria is an automatic rifleman with Kilo Company, Battalion Landing Team 3rd Battalion, 1st Marine Regiment, 15th Marine Expeditionary Unit. During the course, Marines learned how to trap, clean, and cook wild life. The purpose of the exercise was to strengthen military cooperation in the planning and execution of amphibious operations between Malaysian armed forces and U.S. Marines. The 15th MEU is currently deployed in the Indo-Asia-Pacific region to promote regional stability and security in the U.S. 7th Fleet area of operations. - U.S. Marine Pfc. Beto Chavarria sucks the blood from the head of a python in a jungle survival course during Malaysia-United States Amphibious Exercise 2015 in Tanduo, Malaysia on Nov. 11. Chavarria is an automatic rifleman with Kilo Company, Battalion Landing Team 3rd Battalion, 1st Marine Regiment, 15th Marine Expeditionary Unit. During the course, Marines learned how to trap, clean, and cook wild life. The purpose of the exercise was to strengthen military cooperation in the planning and execution of amphibious operations between Malaysian armed forces and U.S. Marines. The 15th MEU is currently deployed in the Indo-Asia-Pacific region to promote regional stability and security in the U.S. 7th Fleet area of operations.

Bob Opett, a Hazardous Material Awareness and Operations course instructor, shows service members and firefighters how to properly seal the HazMat suit during the course at Marine Corps Air Station Iwakuni, Japan, Nov. 18, 2015. Provided by Bucks County Community College Department of Public Safety from Doylestown, Penn., the course is used to make individuals more aware of potential hazards and teach them initial response procedures. - Bob Opett, a Hazardous Material Awareness and Operations course instructor, shows service members and firefighters how to properly seal the HazMat suit during the course at Marine Corps Air Station Iwakuni, Japan, Nov. 18, 2015. Provided by Bucks County Community College Department of Public Safety from Doylestown, Penn., the course is used to make individuals more aware of potential hazards and teach them initial response procedures.