Maj. LaShell Davis, tactical officer in-charge, 101st Sustainment Brigade, Fort Campbell, Ky., left, Cpt. Thomas Pierczynski, company commander, Cherokee Troop, 6th Squadron, 4th Cavalry Regiment, 3rd Brigade Combat Team, 1st Infantry Division, Fort Knox, Ky., and Brig. Gen. Duane Gamble, deputy commanding general, 1st Theater Sustainment Command, discuss the upcoming mission as they walk towards the escort and security team, Oct. 14, 2013. Gamble and the 1st TSC afghan rail advisory team are preparing to conduct a battlefield circulation and survey of Afghan Northern Distribution Network, Rail Port 2. (U.S. Army photos by Sgt. 1st Class Timothy Lawn, 1st Theater Sustainment Command Public Affairs/Released)