U.S. Air Force Airman 1st Class Mckenna Johnson, 633d Dental Squadron dental lab technician, grinds down the sprue stump of a milled crown in the dental lab at Joint Base Langley-Eustis, Virginia, July 24, 2024. Grinding down the sprue stump is important to achieve a smooth, accurate fit, ensure the crown blends seamlessly with the surrounding teeth by preventing any discomfort or interference in the patient's mouth. (U.S. Air Force photo by Airman 1st Class Skylar Ellis)