ASIS International (ASIS) is the preeminent organization for security professionals, with more than 33,000 members worldwide. Founded in 1955, ASIS is dedicated to increasing the effectiveness and productivity of security professionals by developing educational programs and materials that address broad security interests, such as the ASIS Annual Seminar and Exhibits, as well as specific security topics. ASIS also advocates the role and value of the security management profession to business, the media, government entities, and the public. By providing members and the security community with access to a full range of programs and services, and by publishing the industry's number one magazine - Security Management - ASIS leads the way for advanced and improved security performance. ¹ The Homeland Security Advisory System designates Blue and Green as two distinct levels. For ease of understanding and implementation by small and midsized companies, the ASIS TASR Guideline combines these two lower levels under one category.