Lt. Col. Nicole Yingling, a dentist with the 193rd Special Operations Medical Group, Middletown, Pennsylvania, performs a routine checkup on an Airman Sept. 22, 2018. Yingling served 11 years as an active duty dentist and after a 12-year break-in-service, enlisted into the 193rd SOMDG. (U.S. Air National Guard photo by Senior Airman Julia Sorber/Released)