John Di Domenico, a performer known for his spot-on impersonations of President Donald Trump, was part of the entertainment community in Las Vegas when he lived there for six years. He shared his thoughts and emotions after the tragic shooting late Sunday night.

Several of his friends were attending the Jason Aldean concert where a gunman fired across the crowd to kill dozens of people and wound more than 500. At least 58 people have died in the biggest mass shooting in modern U.S. history.

Despite the fear and shock, his friends shared stories of self-sacrifice that they witnessed in front of the Mandalay Bay Resort and Casino.

“People really dig down and figure out how to focus and help others,” Di Domenico said.

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