Staff Sgt. Courtney Herrera, 436th Medical Support Squadron radiologic technologist, attends her optometry appointment for a routine checkup May 8, 2019, at Dover Air Force Base, Del. Maj. Carli Murphy, 436th Aerospace Medicine Squadron optometry flight commander, recommends that Airmen schedule an optometry appointment every two to three years at least. (U.S. Air Force video by Airman Danielle Taylor) More