Sticking point
Master Sgt. Renato Oliva, a medical technician assigned to the 931st Aeromedical Squadron, uses a syringe to administer a typhoid vaccination shot to Senior Master Sgt. Willie Tucker, 1st Sergeant for the 931st Aircraft Maintenance Squadron, at McConnell Air Force Base, Kan., Aug. 27, 2012. Air Force Reservist are required to stay current on several different types of vaccinations in order to maintain a constant state of readiness. (U.S. Air Force photo by 1st Lt. Zach Anderson)