United States Coast Guard personnel transfer the illegal contents of a shipping container to a Coast Guard cutter. A key player in combating the flow of illegal drugs to the United States, the Coast Guard monitors shipping and air activity over an area that stretches 16 million sq km (6 million sq mi) and includes the Caribbean, the Gulf of Mexico, and the Eastern Pacific. Coast Guard drug interdiction accounts for more than 50 percent of all U.S. government seizures of cocaine and marijuana each year.