While wearing protective masks, Soldiers from the Headquarters and Headquarters Company, 143d Sustainment Command (Expeditionary) continue to plan, organize and execute sustainment operations during Combat Staff Exercise 17-02 Aug. 15, 2017, in Ft. McCoy, Wis. Although the 143d ESC maintained an operational role in CSTX, the command also evaluated its Soldiers’ individual readiness by conducting Battle Drills ranging from chemical attacks to direct assaults. (U.S. Army photo by Sgt. John L. Carkeet IV, 143d ESC)