Aviation and Airport Security Practice Test.

The Central Intelligence Agency (CIA) primarily gathers and analyzes information about foreign entities and threats to national security. The National Security Agency (NSA) is responsible for collecting and analyzing foreign intelligence and protecting national security information systems. The Drug Enforcement Administration (DEA) investigates violations of federal drug laws and regulates the legal use of controlled substances. Therefore, they are not the primary enforcement body for investigating white-collar crimes. The Federal Bureau of Investigation (FBI) is responsible for investigating a wide range of crimes, including white-collar crimes such as fraud, bribery, and embezzlement. The FBI's jurisdiction includes domestic and international criminal matters, making them the primary enforcement body for investigating white-collar crimes.