MCGHEE TYSON AIR NATIONAL GUARD BASE, Tenn. – Senior Master Sgt. Shaun Withers, career field manager for National Guard Bureau public affairs, speaks with Air National Guard public affairs students in the Public Affairs Managers Course at the I.G. Brown Training and Education Center here, July 16, 2013, about marketing official photography. (U.S. Air National Guard photo by Master Sgt. Kurt Skoglund/Released)