Meet The Former NYPD Detective Who Now Works as Trump's Personal Bodyguard

Keith Schiller is never far from Donald Trump’s side.

Read: Trump May Pay Legal Bills For Supporter Accused of Sucker Punching a Protester

The bodyguard to the billionaire was there protecting his boss from the stage crasher in Ohio over the weekend and was seen getting mixed up with a protestor outside Trump Tower six months ago, where he tore down a sign calling Trump a racist.

When the protester tried to get the banner back Schiller he punched him and calmly walked away.

When Trump ordered Univision anchorman Jorge Ramos out of a press conference last August, it was the 57-year-old bodyguard who firmly escorted the broadcaster out.

Trump and Schiller go way back.

Sometimes, the bodyguard serves as a prop, as in a staged smack down between Trump WWE head honcho Vince McMahon in 2007.

Read: Breitbart Reporter Resigns After Alleged Altercation with Trump Campaign Manager

Schiller is a former NYPD detective who has been Trump's Head Of Security for 16 years.

Former Secret Service agent Jonathan Wachrow told IE: "This is a very high risk, high stress environment that they are in. Their head has to be on a swivel at all times."

Wachrow said that Schiller and Trump's relationship is "built out of trust" and that the bodyguard has been "put in a very difficult position to protect a very exposed individual with a lot of risk." 

Watch: Trump Supporter Who Punched Protester: Next Time, We Might Have to Kill Him