Marines kneel down beside the battlefield cross to pay their final respects to Sgt. Bradley Atwell during a memorial ceremony, Sept. 20, 2012. During the ceremony, Marines paid tribute to Atwell, an aircraft electrical, instrument and flight control systems technician with Marine Aviation Logistics Squadron 16, from Kokomo, Ind. Atwell was killed in action while engaging insurgents during an attack on Camp Bastion, Sept. 14. (U.S. Marine Corps photo by Cpl. Mark Garcia)

Lance Cpl. Stephan DeJesus, a native of Clearwater, Fla., and rifleman with 1st Platoon, Bravo Company, Battalion Landing Team 1st Battalion, 2nd Marine Regiment, 24th Marine Expeditionary Unit, fires an M-16A4 service rifle during high-angle marksmanship training as part of a three-week training package in Djibouti, Sep. 15, 2012. The training was focused on the application of infantry skills in rugged mountain terrain. The 24th MEU is deployed with the Iwo Jima Amphibious Ready Group as a theater reserve and crisis response force throughout U.S. Central Command and the Navy’s 5th Fleet area of responsibility. (U.S. Marine Corps photo by Cpl. Michael Petersheim)

Petty Officers 3rd Class Brandon McKenney and Randall Carlson assemble an M240G machine gun 15 feet underwater during the 4th Annual Recon Challenge at Marine Corps Base Camp Pendleton, Sept. 15, 2012. This year’€™s competitors carried the names of the Recon Marines killed during Operation Iraqi Freedom and Operation Enduring Freedom on their backs and the dog tags of the fallen close to their hearts, said Master Sgt. Mariota Pa’€™u Jr., the operations chief for Reconnaissance Training Company, Advanced Infantry Training Battalion, School of Infantry-West, Marine Corps Base Camp Pendleton. (U.S. Marine Corps photo by Lance Cpl. Sarah Wolff-Diaz)

Sgt. Christopher R. Young, administration clerk with Headquarters Marine Cryptologic Support Battalion, finds himself on the bottom of the heap during a Marine Corps Martial Arts grappling session as part of physical training at Fort Meade, Md. Sept. 26, 2012. The Marines of L Company, under Maj. Robert R. Monday, went through the obstacle course in platoons before ending their training with grappling to maintain their warfighting spirit. (U.S. Marine Corps photo by Cpl. Chelsea Flowers Anderson)

Lance Cpl. Sam Enriquez, a military working dog handler with 3rd Law Enforcement Battalion, stationed in Okinawa, Japan and his K-9 partner Kally, take part in night operations training during the Inter-service Advanced Skills K-9 course, at the U.S. Army’s Yuma Proving Ground, Sept. 24, 2012. Enriquez, a native of Ramsey, Minn., and 18 other military police K-9 handlers from the Army, Navy and Marine Corps, took part in the advanced pre-deployment course. Since the rigors and dangers of combat don’t end when the sun sets, neither does the training the team goes through. (U.S. Marine Corps photo by Cpl. Aaron Diamant)

Marines with 1st Battalion, 7th Marine Regiment, begin a patrol out of Forward Operating Base Shamsher, Helmand province, Afghanistan Sept. 6, 2012. Marines conducted the patrol to disrupt the flow of lethal and illicit aid by the enemy in the area. (U.S. Marine Corps photo by Lance Cpl. Jason Morrison)

From right, U.S. Marine Corps engineers Staff Sgt. Brian Dunkle and Sgt. Sean Casey, with Bravo Engineer Company, Combat Logistics Battalion 2, Regional Command (Southwest) grapple on Forward Operating Base Shukvani, Helmand province, Afghanistan September 17, 2012. Marines used physical activities and strength training to counter stress and the fog of war. (U.S Marine Corps photo by Lance Cpl. Joshua M. Rudy)