Not every wounded warrior who comes back from battle overseas has an obvious or noticeable disability. Many returning veterans sometimes barely even notice themselves that they might have a hearing problem. Needless to say, military activity involves, shots, booms, bangs, and other loud, potentially damaging noise, which can cause a veteran to not be able to hear certain sounds. The University of California Riverside runs a research lab where they're working on video game therapies to help veterans with those unusual hearing problems. KVCR's Natalya Estrada has the story.