Air Force medical lab technician: Senior Airman Katherine Herzer
Senior Airman Katherine Herzer, 319th Medical Support Squadron laboratory technician, transfers bacteria cultures using a bio-safety examining cabinet Nov. 8, 2013, on Grand Forks Air Force Base, N.D. As an Air Force medical lab technician, the 22-year-old from Evansville, Ind., went through a four-month-long training course at Sheppard AFB, Texas, for the first phase of their technical training. (U.S. Air Force photo/Staff Sgt. Luis Loza Gutierrez)