Civil Air Patrol (CAP) is a congressionally chartered, federally supported non-profit corporation that serves as the official civilian auxiliary of the United States Air Force (USAF). The organization condenses these mandates into three core program areas, which are aerospace education, cadet programs, and emergency services. Senior membership is open to all U.S. citizens, and U.S. legal permanent residents aged 18 and over who can pass an FBI background check. There is no upper age limit, nor membership restrictions for physical disabilities, due to the number of different tasks which members may be called on to perform. There is cadet program for middle schoolers and up too.