Cmdr. Rebecca Neill, Naval officer-in-charge of Innovative Readiness Training Arkansas Care and Army Staff Sgt. Christopher Nichols, 68E dental specialist with 7218th Medical Support Unit prepare to extract a patient’s teeth during IRT Arkansas Care, July 29, 2014. IRT Arkansas Care served the residents of a seven county area known as the Arkansas Delta region. The joint-service Reserve units provided a variety of general medical, optometry and dental services while simultaneously gaining the training they need for their military occupational specialty.