The United States sent more than 1,000 analysts, law enforcement and special operations personnel from all 17 American intelligence agencies to provide additional security for the 2016 Olympics in the form of human intelligence, spy satellites, electronic eavesdropping, and social media monitoring.
Although security is most prominently a combined effort between the US and Brazil, there are 51 other countries supplying intelligence to the counter-terrorism effort. The majority of American intelligence agents are working remotely, while about 350 are actually on the ground in Rio.
“U.S. intelligence cooperation with Brazil has been excellent since 9/11,” a senior intelligence official told NBC News. “We consider the Brazilians to be well-prepared and highly professional.” READ MORE.