1st Battalion 3d Marines

Capt. Peter Tate, battalion adjutant with 1st Battalion, 3rd Marine Regiment, salutes the colors as the National Anthem plays during the unit’s change of command ceremony at Dewey Square, Marine Corps Base Hawaii, Dec. 21, 2017. The ceremony formally transferred authorities from Lt. Col. Jeremiah Salame to Lt. Col. Eric Meador. (U.S. Marine Corps photo by Sgt. Zachary Orr)

U.S. Marines with 1st Battalion, 3rd Marine Regiment and a members of the Indonesian Korps Marinir hold a python as part of a jungle survival class during Cooperation Afloat Readiness & Training (CARAT) in Banyuwangi, East Java, Indonesia, Sept. 11, 2017. CARAT builds, maintains and enhances bilateral defense and interoperability of military forces between the United States and Indonesia. (U.S. Marine Corps photo by Lance Cpl. Osvaldo L. Ortega III)

Sgt. Maj. Emilio Hernandez, sergeant major for 1st Battalion, 3rd Marine Regiment, delivers the unit color to the incoming and outgoing commanding officers of the battalion during the unit’s change of command ceremony at Dewey Square, Marine Corps Base Hawaii, Dec. 21, 2017. The ceremony formally transferred authorities from Lt. Col. Jeremiah Salame to Lt. Col. Eric Meador. (U.S. Marine Corps photo by Sgt. Zachary Orr)

A sunrise hangs over the horizon at the Jungle Warfare Training Center, aboard Camp Gonsalves, Okinawa, Japan, July 13, 2017. The Jungle Warfare Training Center provides individual and unit level training to increase survivability and lethality while operating in a jungle environment. (U.S. Marine Corps photo by Cpl. Aaron S. Patterson)

U.S. Marines with Alpha Company, 1st Battalion, 3rd Marine Regiment, rappel down a cliff at the Jungle Warfare Training Center aboard Camp Gonsalves, Okinawa, Japan, July 11, 2017. The Jungle Warfare Training Center provides individual and unit level training to increase survivability and lethality while operating in a jungle environment. The Hawaii-based battalion is forward deployed to Okinawa, Japan as part of the Unit Deployment Program. (U.S. Marine Corps photo by Cpl. Aaron S. Patterson)

Cpl. Bryan Hernandezrodriguez, a Hialeah, Florida native and rifleman assigned to Bravo Company, 1st Battalion, 3rd Marine Regiment, travels across a rope bridge during the endurance course, aboard Camp Gonzales, Okinawa, Japan, July 7, 2017.The Jungle Warfare Training Center provides individual and unit level training to increase survivability and lethality while operating in a jungle environment. The Hawaii-based battalion is forward deployed to Okinawa, Japan as part of the Unit Deployment Program. (U.S. Marine Corps photo by Cpl. Aaron S. Patterson)

U.S. Marines assigned to 1st Battalion, 3rd Marine Regiment, feed a simulated casualty through an obstacle during the 3rd Marine Division Annual Squad Competition December 7, 2017, at the Jungle Warfare Training Center in Okinawa, Japan. The squad competition is conducted to test and compare each unit to see which is the fittest for combat. The squads are with 1st Battalion, 8th Marine Regiment; 2nd Battalion, 1st Marine Regiment; 1st Battalion, 3rd Marine Regiment and Combat Assault Battalion. The Hawaii-based battalion is forward deployed to Okinawa, Japan as part of the Unit Deployment Program. (U.S. Marine Corps photo by Sgt. Aaron S. Patterson)

U.S. Marines with Alpha Company, 1st Battalion, 3rd Marine Regiment, inflate their uniform as a flotation device during annual swim qualification aboard Camp Hansen, Okinawa, Japan, June 25, 2017. The Marines completed their swim qualification to build confidence and increase survivability in the water. The Hawaii-based battalion is forward deployed to Okinawa, Japan as part of the Unit Deployment Program. (U.S. Marine Corps photo by Cpl. Aaron S. Patterson/Released)

Pfc. Charles M. Burroughs, a La Plata, Maryland native and Chemical, Biological, Radiological, Nuclear specialist with 1st Battalion, 3rd Marine Regiment, instructs Marines during annual gas chamber qualification aboard Camp Hansen, Okinawa, Japan, June 26, 2017. The annual training familiarizes Marines with the use of their gas mask to prepare them for a biological or chemical attack. The Hawaii-based battalion is forward deployed to Okinawa, Japan as part of the Unit Deployment Program. (U.S. Marine Corps photo by Cpl. Aaron S. Patterson/Released)

U.S. Marines with 1st Battalion, 3rd Marine Regiment conduct the second portion of underwater egress survival training using the Shallow Water Egress Trainer (SWET). The next step uses the Modular Amphibious Egress Trainer (MAET) better known as the “helo dunker.” The MAET simulates a helicopter body that lands in the water and then turns upside down The training ensures Marines have the necessary skills and calm demeanor needed to exit a sinking aircraft. (U.S. Marine Corps photo by Capt. Ross D. Geske)