The Outdoor Infantry Immersion Trainer (OIIT) in Camp Lejeune, NC, looks like a war zone, and that is intentional. The facility is designed to give Marines a hyper realistic training experience by replicating a generic North African village with shell-damaged buildings, sound and light systems, smell generators, and role players who can be friend or foe.

The OIIT is capable of small-unit training as well as platoon and squad leader decision-making assessments. Urban structures are paired with non-live fire training systems, virtual simulation, and video instrumentation for after-action review. The 5-acre complex includes 51 one- and two-story buildings and 129 rooms. Battlefield-effects systems simulate rocket-propelled grenades, improvised explosive devices, and other explosives. For example, there is a sound system; a centrally controlled, light -emitting diode system that replicates candlelight; and a smell-generation system. The training system can support many types of scenarios.