Members of the 146th Airlift Wing, California Air National Guard and the 176th Wing, Alaska Air National Guard, unload Chemical, Biological, Radiological, Nuclear and high-yield Explosive Enhanced Response Force Package gear from an Elmendorf, Alaska C-17, July 9, 2011 at Volk Field, Wis. CERFP is being transported as part of the domestic operations scenario being held during the two week Patriot exercise here.