Walking the line
Airman 1st Class Jason Lincoln, 2nd Security Forces Squadron installation control leader, administers the Horizontal Gaze Nystagmus, or pen test, to a training participant during standard field sobriety training on Barksdale Air Force Base, La., Aug. 7. More than 25 personnel from 2 SFS attended this training in order to become qualified to conduct field sobriety tests in the field. (U.S. Air Force photo/ Senior Airman Sean Martin)(RELEASED)
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