Sgt. Miguel Diaz, a Special-Purpose Marine Air-Ground Task Force Africa combat engineer, practices patrolling with a role player portraying a soldier of an African partner nation during the unit's mission rehearsal exercise aboard Marine Corps Base Camp Lejeune, N.C., Dec. 12, 2012. The four-day exercise simulated situations the Marines and sailors may encounter during their deployment, such as language barriers, requests for supplies and local illnesses. (Marine Corps photo by Sgt. Austin Hazard/Released) - Sgt. Miguel Diaz, a Special-Purpose Marine Air-Ground Task Force Africa combat engineer, practices patrolling with a role player portraying a soldier of an African partner nation during the unit's mission rehearsal exercise aboard Marine Corps Base Camp Lejeune, N.C., Dec. 12, 2012. The four-day exercise simulated situations the Marines and sailors may encounter during their deployment, such as language barriers, requests for supplies and local illnesses. (Marine Corps photo by Sgt. Austin Hazard/Released)