U.S. Marines with Amphibious Vehicle Test Branch, Marine Corps Tactical Systems Support Activity, drive a new Amphibious Combat Vehicle ashore during low-light surf transit testing at AVTB Beach on Marine Corps Base Camp Pendleton, California, Dec. 18. - U.S. Marines with Amphibious Vehicle Test Branch, Marine Corps Tactical Systems Support Activity, drive a new Amphibious Combat Vehicle ashore during low-light surf transit testing at AVTB Beach on Marine Corps Base Camp Pendleton, California, Dec. 18.

9 mm ammunition sits inside an ammunition canister during a live fire range at Camp Hansen, Okinawa, Japan, Jan. 10, 2019. - 9 mm ammunition sits inside an ammunition canister during a live fire range at Camp Hansen, Okinawa, Japan, Jan. 10, 2019. S-4 logisticians with the 31st Marine Expeditionary Unit ensure the proper caliber and quantity of ammunition is available for Marines to effectively train. The 31st MEU, the Marine Corps only continuously forward-deployed MEU, provides a flexible and lethal force ready to perform a wide range of military operations as the premier crisis response force in the Indo-Pacific region. (U.S. Marine Corps photo by Lance Cpl. Tanner D. Lambert)

U.S. Army Staff Sgt.Tyrone Hamilton, left, the forward support noncommissioned officer in charge with Joint Task Force - Bravo's 1st Battalion, 228th Aviation Regiment, and U.S. Marine Cpl. Tyler Slaggert, a field radio operator with Special Purpose Marine Air-Ground Task Force - Southern Command, link their communications equipment together to secure reliable voice communication during a communications exercise aboard Soto Cano Air Base, Honduras, to prepare for future joint-level operations, June 19, 2018. The Marines and sailors of SPMAGTF-SC are conducting security cooperation training and engineering projects alongside partner nation military forces in Central and South America. The unit is also on standby to provide humanitarian assistance and disaster relief in the event of a hurricane or other emergency in the region. - U.S. Army Staff Sgt.Tyrone Hamilton, left, the forward support noncommissioned officer in charge with Joint Task Force - Bravo's 1st Battalion, 228th Aviation Regiment, and U.S. Marine Cpl. Tyler Slaggert, a field radio operator with Special Purpose Marine Air-Ground Task Force - Southern Command, link their communications equipment together to secure reliable voice communication during a communications exercise aboard Soto Cano Air Base, Honduras, to prepare for future joint-level operations, June 19, 2018. The Marines and sailors of SPMAGTF-SC are conducting security cooperation training and engineering projects alongside partner nation military forces in Central and South America. The unit is also on standby to provide humanitarian assistance and disaster relief in the event of a hurricane or other emergency in the region.

Gunnery Sgt. Richard D. Madrid, an airborne, air delivery specialist with 3rd Air Delivery Platoon, Landing Support Company, 3rd Transportation Support Battalion, prepares to board a C-130 after free-falling May 21, 2018, on Ie Shima, Okinawa, Japan. The Marines conducted air drop operations dropping a type-five platform, door bundles, free fall and static line jumpers, and the Polaris MRZR onto the island. 3rd Marine Logistics Group Marines worked alongside Marines with 3rd Reconnaissance Battalion, 3rd Marine Division, during the regularly scheduled training evolution to complete their first ever successful drop of a Polaris MRZR from a C-130. Madrid is a native of Monterey Park, California. - Gunnery Sgt. Richard D. Madrid, an airborne, air delivery specialist with 3rd Air Delivery Platoon, Landing Support Company, 3rd Transportation Support Battalion, prepares to board a C-130 after free-falling May 21, 2018, on Ie Shima, Okinawa, Japan. The Marines conducted air drop operations dropping a type-five platform, door bundles, free fall and static line jumpers, and the Polaris MRZR onto the island. 3rd Marine Logistics Group Marines worked alongside Marines with 3rd Reconnaissance Battalion, 3rd Marine Division, during the regularly scheduled training evolution to complete their first ever successful drop of a Polaris MRZR from a C-130. Madrid is a native of Monterey Park, California.

U.S. Marine Sgt. Jordan Becker, left, a cyber network specialist with Joint Task Force Matthew, offloads a generator from a CH-53E Super Stallion helicopter with the help of the Brazilian service members at Jeremie, Haiti, Oct. 15, 2016. After eight days of supply drop operations JTF Matthew has delivered over 478,000 pounds of supplies utilizing various military aircraft. JTF Matthew, a U.S. Southern Command-directed team comprised of Marines, soldiers, sailors and airmen, is providing critical airlift capabilities during the initial stages of the U.S. Agency for International Development's disaster relief operations in Haiti while the international response builds. - U.S. Marine Sgt. Jordan Becker, left, a cyber network specialist with Joint Task Force Matthew, offloads a generator from a CH-53E Super Stallion helicopter with the help of the Brazilian service members at Jeremie, Haiti, Oct. 15, 2016. After eight days of supply drop operations JTF Matthew has delivered over 478,000 pounds of supplies utilizing various military aircraft. JTF Matthew, a U.S. Southern Command-directed team comprised of Marines, soldiers, sailors and airmen, is providing critical airlift capabilities during the initial stages of the U.S. Agency for International Development's disaster relief operations in Haiti while the international response builds.

A Marine with Echo Company, Battalion Landing Team, 2nd Battalion, 6th Marine Regiment, prepares to submerge underwater while wearing a supplemental emergency breathing device at Marine Corps Base Camp Lejeune, North Carolina, Sept. 22, 2015. The company participated in the submerged vehicle egress training to gain confidence in their abilities to safely exit a sinking amphibious assault vehicle in preparation for their upcoming deployment with the 26th Marine Expeditionary Unit. - A Marine with Echo Company, Battalion Landing Team, 2nd Battalion, 6th Marine Regiment, prepares to submerge underwater while wearing a supplemental emergency breathing device at Marine Corps Base Camp Lejeune, North Carolina, Sept. 22, 2015. The company participated in the submerged vehicle egress training to gain confidence in their abilities to safely exit a sinking amphibious assault vehicle in preparation for their upcoming deployment with the 26th Marine Expeditionary Unit.