An audience member had some colorful reactions to President Donald Trump's speech at a campaign rally in Billings, Montana, on Thursday.

The unidentified man made several facial expressions as the president delivered his remarks.

A woman later approached the man mid-speech and briefly spoke with him before taking his spot in the crowd.

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As President Donald Trump delivered an impassioned speech at a campaign rally in Billings, Montana, on Thursday, one audience member had some colorful reactions to the president's remarks.

Standing behind Trump, the unidentified man made several animated facial expressions as the president spoke on a list of topics as varied as healthcare policy and the 2016 presidential election.

A woman later approached the man mid-speech and briefly spoke with him before taking his place in the crowd:

An audience member who stood beside the man wearing a "Make America Great Again" hat appeared to be in on the act. This person was replaced by a different woman about eight minutes after the unidentified man was moved off camera.

Trump's campaign rallies are often characterized by raucous interactions among supporters, Trump, and, sometimes, protesters.

Having conducted 520 campaign rallies, Trump's staffers appear to have developed a surgical approach to addressing the riffraff. During a rally in Evansville, Indiana, last week, one of Trump's volunteer staffers was caught on camera blocking a news photographer's camera lens as the photographer tried to take a photo of a protester.

Here are revelations from the Bob Woodward book roiling the White House: