AdvertisementService Dog Registries To Streamline Travel For Veterans With 'Invisible Injuries'July 28, 2018Adelina LancianesefacebookEmailBrett Simon, president and co-founder of K9s for Warriors organization, stands with his dog Lincoln at the Association of Service Dog Providers for Military Veterans annual conference in Tyson's Corner, Va. The nonprofit bills itself as the largest provider of psychiatric service dogs for veterans. (NPR)