The Pima County Office of Emergency Management & Homeland Security is staging a training exercise from 8 a.m. to 3 p.m. Saturday on the northwest side, and it needs volunteers willing to play victims, Caren Prather, volunteer coordinator, said.

Four to five teams - including one made up of middle schoolers - which have received at least 20 hours of training will put their skills to the test in assessing the "victims" of a natural-disaster scenario, Prather said. Volunteers will be "painted up with wounds" for the training. They also will be fed lunch.

Volunteer victims must register by 10 a.m. today. For more information or to sign up, call 351-3200.