FX.co ★ Secret mission: to safeguard presidential candidates

The US Defense Security Service is required by law to provide protection if requested by policy makers. Nowadays, agents of the security service are watching out for three leaders of the presidential race, namely Donald Trump, Bernie Sanders, and Hillary Clinton.

On the photo, Donald Trump accompanied by agents of the US Defense Security Service, March 12, Ohio.

Bernie Sanders' campaign has requested Secret Service protection for the 74-year-old Vermont senator, who is the most advanced in years. Secret agents nicknamed Mr. Sanders the fearless for his frank statements. The candidate stresses his intention to deal with Wall Street influence on the state policy.

On the photo, Bernie Sanders is speaking to voters in Wisconsin. Defense agents are on both sides of the speaker.

People from the federal law enforcement agency closely monitor all developments in an audience during a candidate's speech. Besides, they check a room before voters arrive at the place.

On the photo, a secret agent is standing in an empty hall before Donald Trump meets an audience on March 19, Arizona.

Each of the leaders is safeguarded by at least 5 private agents. However, a number of bodyguards increases depending on a crowd size.

On the photo, agents from the secret service are watching a crowd behavior at Donald's Trump's rally on March 4, Michigan.

Every agent is equipped with mandatory earphones and a microphone to communicate with colleagues during an event.

On the photo, earphones provided by the US Security Service.

On the photo, an agent is on the alert in an airport before Donald Trump's plane lands there.

On the photo, Hillary Clinton's agent is watching her communication with voters.

On the photo, Hillary Clinton's agent is keeping the order.

On the photo, Donald Trump is walking along Greenville accompanied by a group of agents.

On the photo, a representative from the security service is protecting Bernie Sanders and his family during a walk.