Founded in 1975, the Maricopa County Sheriff's "Desert Search Unit", (DSU), has remained on-call to serve the citizens of Arizona through active participation in search and rescue operations and management statewide. These dedicated volunteer trackers are often the first in and last out during a search and rescue mission, The DSU brings over 350 years of search and rescue experience to an operation and are recognized as one of Arizona's top "Search And Rescue" (SAR) organizations. Members of DSU are required to maintain a high level of operational readiness with regular training and practice to insure the highest of pofessional standards. The Maricopa County Sheriff's Desert Search Unit is dedicated to service "That Others May Live".