To attend this event, you must be a U.S. Citizen, Permanent Resident, or Protected Person. CCAT is an export-controlled facility, and all visitors will be required to sign in and present proof of citizenship. Acceptable forms of identification include a U.S. Verified Driver's License (REAL ID with star), U.S. Passport, U.S. Asylum Visa, U.S. Green Card, U.S. Certified Birth Certificate.