Nerve
U.S. Air Force Capt. (Dr.) Jamie Smith, 23d Aeromedical Dental Squadron dentist, uses cold stimulation to check for nerve damage on Airman 1st Class Ceaira Tinsely, 23d Wing public affairs photojournalist at Moody Air Force Base, Ga., July 22, 2014. Smith instructed Tinsley to raise her hand at the first sign of pain. (U.S. Air Force photo by Airman 1st Class Sandra Marrero/Released)