Chief Master Sgt. Shawn Chrystal, 169th Force Support Squadron
U.S. Air Force Chief Master Sgt. Shawn Chrystal, 169th Force Support Squadron Chief at McEntire Joint National Guard Base of the South Carolina Air National Guard, poses for a portrait, Sept. 12, 2013. (U.S. Air National Guard photo by Senior Master Sgt. Edward Snyder/Released)