Tech. Sgt. Christy Nixon, Instructor supervisor of the Air Force Dental Assistant Training program, gives students a glimpse of the restorative materials they will work with during training Oct. 20, 2016 at the Medical Education and Training Campus on Joint Base San Antonio-Fort Sam Houston. The dental assistant apprentice course is one of four courses taught at the 381st Training Squadron, a unit of the 59th Training Group. (U.S. Air Force photo/Staff Sgt. Jerilyn Quintanilla)

Tech. Sgt. Christy Nixon, an Air Force Dental Assistant Apprentice Course instructor, conducts a lesson at the Medical Education and Training Campus on Joint Base San Antonio-Fort Sam Houston, Oct. 20, 2016. The 9-week technical training course is designed to give students the knowledge and skills necessary to perform their job in the operational Air Force. Nixon is assigned to the 381st Training Squadron, a unit of the 59th Training Group. (U.S. Air Force photo/Staff Sgt. Jerilyn Quintanilla)

Airman Benjamin Moore, an Air Force Dental Assistant Apprentice Course trainee, mixes Dycal Oct. 20, 2016 at the Medical Education and Training campus on Joint Base San Antonio-Fort Sam Houston. Dycal is used as a defensive barrier to protect the pulp. During training, all students in the course are assigned to the 381st Training Squadron, a unit of the 59th Training Group. (U.S. Air Force photo/Staff Sgt. Jerilyn Quintanilla)

Air Force Dental Assistant Apprentice Course students sanitize their work station as part of a lesson on infection control Oct. 20, 2016 at the Medical Education and Training campus on Joint Base San Antonio-Fort Sam Houston. Close to 300 technical training students make their way through the various courses taught at the Dental Assistant Program under the 381st Training Squadron, a unit of the 59th Training Group. The squadron is comprised of 96 Airmen who serve in leadership, administrative and instructor roles. (U.S. Air Force photo/Staff Sgt. Jerilyn Quintanilla)

Airman 1st Class Celenia Hoffman, an Air Force Dental Assistant Apprentice Course trainee, listens to a lesson at the Medical Education and Training Campus on Joint Base San Antonio-Fort Sam Houston, Oct. 20, 2016. Trainees who graduate from the course, gain the knowledge and skills necessary to perform as entry-level dental assistants. All students are assigned to the 381st Training Squadron, a unit of the 59th Training Group. (U.S. Air Force photo/Staff Sgt. Jerilyn Quintanilla)