Dr. (Lt. Col.) Ali Miremami, 445th Aerospace Medicine Squadron assistant chief of dental, conducts a dental exam with Senior Airman Matthew Gideon, 445th Maintenance Squadron aircraft structural technician, as part of his Periodic Health Assessment Services Blood Program here July 15, 2017. The PHA is a screening tool used by the armed forces to evaluate the individual medical readiness of their Service members. (U.S. Air Force photo /Master Sgt. Patrick O’Reilly)