180418-M-CK972-007 KOTZEBUE, Alaska (April 18, 2018) Dentists with Innovative Readiness Training (IRT) Arctic Care 2018 perform a dental cleaning on Lt. Cmdr. Joseph Villaluz, the dental officer in charge of IRT Arctic Care 2018, assigned to the 4th Medical Battalion, 4th Marine Logistics Group, during a dental operation in Kotzebue, Alaska, April 18, 2018. Sponsored by the Office of the Secretary of Defense Reserve Affairs, Innovative Readiness Training exercises demonstrate the clinical and logistical ability of the United States military. (U.S. Marine Corps photo by Sgt. Melissa Martens/Released)