The Department of Veterans Affairs (VA) is amending its regulation governing individuals presumed to have been exposed to herbicides. Specifically, VA is expanding the regulation to include an additional group consisting of individuals who performed service in the Armed Forces under circumstances in which they had regular and repeated contact with C-123 aircraft known to have been used to spray an herbicide agent (Agent Orange) during the Vietnam era. In addition, the regulation will establish a presumption that members of this group who later develop an Agent Orange presumptive condition were disabled during the relevant period of service, thus establishing that this service constituted active, naval, military or air service. The effect of this action is to presume herbicide exposure for these individuals and to allow individuals who were exposed to herbicides during reserve service to establish veteran status for VA benefit purposes. The need for this action results from a recent decision by the Secretary of Veterans Affairs to acknowledge that individuals who had regular and repeated exposure to C-123 aircraft that the United States Air Force used to spray the herbicides in Vietnam during Operation Ranch Hand were exposed to Agent Orange.