Parris Island's mascot, Cpl. Legend, salutes officers of Company M, 3rd Recruit Training Battalion, and November Company, 4th Recruit Training Battalion, during the motivational run on Dec. 3, 2015. (Jennifer Schubert/U.S. Marine Corps)

A recruit with Company B, 1st Recruit Training Battalion, executes a rear hand punch during a Marine Corps Martial Arts Program session at Marine Corps Recruit Depot San Diego, Nov. 25. (Tyler Viglione/U.S. Marine Corps)

A reconnaissance, surveillance and decontamination Marine assists a peer to suit up mission-oriented protective postures 4 gear during a simulated chemical attack at the Marine Wing Support Squadron 171 motor transportation at Marine Corps Air Station Iwakuni, Japan, Nov. 18, 2015. (Jessica Quezada/U.S. Marine Corps)

Marines with 1st Law Enforcement Battalion, I Marine Expeditionary Force Headquarters Group, I Marine Expeditionary Force evacuate a simulated casualty during mobile immersion training aboard Marine Corps Base Camp Pendleton, Calif., Nov. 20, 2015. (Robert Bliss/U.S. Marine Corps)

Lt. Col. Lauren Edwards gives a speech during the 8th Engineer Support Battalion change of command ceremony at Camp Lejeune, N.C., Nov. 30, 2015. Edwards??? new responsibility, as the first female commander of an ESB, will be to provide engineer support to II Marine Expeditionary Forces. (Ryan Young/U.S. Marine Corps)

U.S. Marines with Marine Medium Tiltrotor Squadron 161, 15th Marine Expeditionary Unit, throw punches during a Marine Corps Martial Arts Program course aboard the USS Essex, Nov. 25, 2015. (Elize McKelvey/U.S. Marine Corps)

Lance Cpl. Frank A. Pitts jumps off the rappel tower to fast rope during a training exercise on Camp Hansen, Okinawa, Japan December 1. Battalion Landing Team 1/5 conducted fast-rope drills to increase unit effectiveness for their upcoming deployment. (Samantha Villarreal/U.S. Marine Corps)

A U.S. Marine Corps EA-6B Prowler assigned to Marine Tactical Electronic Warfare Squadron 2 is towed into position before a turn-around inspection on Marine Corps Air Station Cherry Point, N.C., Dec. 1, 2015. (Jered Stone/U.S. Marine Corps)

Servicemembers from countries around the world conduct flyovers during a military parade celebrating the National Day of Romania in Bucharest, on Dec. 1, 2015. Great Union Day commemorates the assembly of the delegates of ethnic Romanians held in Alba Ivlia, which declared the Union of Transylvania with Romania. (Melanye Martinez/U.S. Marine Corps)

A drill instructor of Company F, 2nd Recruit Training Battalion, advises a recruit on how to execute a counter-choke during a Marine Corps Martial Arts Program session at Marine Corps Recruit Depot San Diego, Nov. 30, 2015. (Angelica Annastas/U.S. Marine Corps)