PRISM is a clandestine mass electronic surveillance data mining program operated by the United States National Security Agency (NSA) since 2007. This is a simplified and stylized version of their logo/ emblem for stickers, t-shirts, etc 划船 foreign intelligence surveillance act 国家安全局 棱镜徽标
transportation con government weather tsunami roadsigns ready logo roadsign Tsunami Ready Logo Converted From Government Website Bitmap clip art vector graphic can be downloaded for free 海啸 准备就绪 徽标 从政府网站位图转换而来的海啸准备徽标