U.S. Marine Lance Cpl. Victor CastilloGarcia, left, a field radio operator from Special-Purpose Marine Air-Ground Task Force Crisis Response-Africa, provides security for an MV-22B Osprey at a landing zone in Sierra Del Retin, Spain, May 4, 2015. The Marines landed at the site to conduct range operations with the Spanish Marines, who used the Osprey as part of their battalion’s training exercise. - U.S. Marine Lance Cpl. Victor CastilloGarcia, left, a field radio operator from Special-Purpose Marine Air-Ground Task Force Crisis Response-Africa, provides security for an MV-22B Osprey at a landing zone in Sierra Del Retin, Spain, May 4, 2015. The Marines landed at the site to conduct range operations with the Spanish Marines, who used the Osprey as part of their battalion’s training exercise.

Marines with 2nd Platoon, 2nd Force Reconnaissance Company, II Marine Expeditionary Force are instructed on the course of fire before participating in a live-fire exercise during a close-quarters combat tactics course at range K-501A aboard Marine Corps Base Camp Lejeune, N.C., April 14, 2015. Marines built upon training in techniques and tactics in preparation for the 22nd Marine Expeditionary Unit slated to deploy in 2016. - Marines with 2nd Platoon, 2nd Force Reconnaissance Company, II Marine Expeditionary Force are instructed on the course of fire before participating in a live-fire exercise during a close-quarters combat tactics course at range K-501A aboard Marine Corps Base Camp Lejeune, N.C., April 14, 2015. Marines built upon training in techniques and tactics in preparation for the 22nd Marine Expeditionary Unit slated to deploy in 2016.