Yellow tape is used to mark each patient area within the medical tent during a two-day Chemical, Biological, Radiological, Nuclear and Explosives Enhanced Response Force Package exercise at Volk Field Air National Guard Base, Wis., May 1-2. The exercise allowed service members to prepare for the first ever CERFP one-day inspection, scheduled to be held in June 2015. (U.S. Air National Guard photo by Senior Airman Andrea F. Rhode)