U.S. Department of Homeland Security. (2023). Transportation Security. Washington, DC.The Transportation Security Administration (TSA) was created in the wake of 9/11 to strengthen the security of the nation’s transportation systems while ensuring the freedom of movement for people and commerce. TSA screens 100 percent of all passengers into, out of, and within the United States through TSA’s Secure Flight program. U.S. transportation security encompasses: Aviation Security, Cargo Screening, Traveler Redress Inquiry, Trusted Traveler and Visa Waiver programs, and Maritime Security.