Master Sgt. Kevin Roper, medical technician with the 419th Medical Squadron, administers vaccinations at the Tripler Army Medical Center in Honolulu, Hawaii. Roper spent time preparing patients for procedures and assisting with administration while working at TAMC during his two-week annual training, honing his techniques and completing required medical skills refresher training. Roper also worked in the gastroenterology section where he worked with up to 11 patients a day. (U.S. Air Force photo/Staff Sgt. Christina Judd)