Navy Petty Officer 2nd Class Adrian B. Echevarri, left, dental leading petty officer with 4th Dental Battalion, 4th Marine Logistics Group, assists Air Force Col. Clifford Zdanowicz, right, a dental officer with 512 Aerospace Medicine Squadron, with a dental procedure on a local citizen during Innovative Readiness Training Arctic Care 2018, Kotzebue, Alaska, April 19, 2018. IRT Arctic Care 2018 is comprised of a joint and multi-national force providing medical, dental, optometry and veterinary care for underserved villages in the Maniilaq Service Area, April 16-24. (U.S. Marine Corps photo by Sgt. Melissa Martens)