Why we serve: U.S. Army Sgt. Lydia Johnston

By Sgt. Duncan BrennanJanuary 12, 2013

Why we serve: U.S. Army Sgt. Lydia Johnston
Sgt. Lydia Johnston, Headquarters and Headquarters Troop, 2nd Squadron, 17th Cavalry Regiment medic enjoys helping her fellow soldiers when they are sick or injured at Forward Operating Base Fenty, Afghanistan, on Dec. 21, 2012. (U.S. Army photo by S... (Photo Credit: U.S. Army) VIEW ORIGINAL