The Department of Veterans Affairs (DVA) announced a national outreach campaign to locate veterans who were exposed to mustard gas or the chemical weapon Lewisite during their service. Most of these veterans participated in chemical testing programs during World War II. They were exposed to mustard agents, which includes sulfur mustard and nitrogen mustard and Lewisite, which is a blister-producing chemical that contains organic arsenic. The VA is mailing information to veterans and survivors within the first group of participants identified by DoD. . VA is continuing to seek addresses for additional veterans and survivors, and the VA invites veterans to file disability compensation claims for any condition-related to service, including exposure to mustard agents and Lewisite. Veterans or their survivors with questions about these benefits should contact VA at 1-800-749-8387.