AF Stripes & Samples--Medical Samples
Staff Sgt. Thomas C. Sullivan Jr., 319th Medical Support Squadron laboratory technician, checks the growth progress of bacteria cultures using a magnifying lamp inside a bio-safety examining cabinet May 22, 2013, at Grand Forks Air Force Base, N.D. Air Force medical lab technicians go 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)