U.S. Air Force Senior Airman Victor Petrelli, an aerospace

U.S. Air Force Senior Airman Victor Petrelli, an aerospace medical technician from the New Jersey Air National Guard's 177th Medical Group, gathers the necessary materials in order to administer a Hepatitis A immunization to an 18-month-old child at the 86th Medical Clinic on Ramstein Air Base, Germany, Aug. 6. Petrelli is in the process of completing his immunization back-up technician training at the clinic. (U.S. Air National Guard photo by Senior Airman Shane S. Karp/Released)