A gunman tried to take down President Ronald Reagan in March 1981.
The president instead rose physically, spiritually and politically after surviving the near-death experience, according to one of the people who knew him best.
"Surviving the assassination attempt deepened his faith and drove his faith even deeper into his soul," historian and Reagan biographer Craig Shirley told Fox News Digital in a phone interview this week.
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"Reagan displayed grace under pressure that day to the American people. His likability soared, even among people who didn’t agree with him."
The historian and political insider said he believes Donald Trump is about to enjoy the same surge in personal faith, popularity and power as did Reagan because he displayed innate "courage" on Saturday evening, just moments after a bullet came within a mere inch from shattering his skull.
"Even Trump’s harshest critics can’t deny that he’s a brave man," said Shirley. "Just look at how he handled himself after he got shot. He didn’t cry. He didn’t whine."
"He didn’t go into the fetal position," Shirley added. "He stood there like a man. He pumped his fist at the crowd and said, ‘Fight, fight, fight’ as the Secret Service is rushing him off the stage."
Shirley worked on Reagan’s 1980 and 1984 election campaigns, both of which he won easily. Shirley served in the Reagan White House and has since authored six biographies about the Great Communicator.
Reagan, like Trump, was a populist Republican and D.C. outsider who enjoyed support in the Corn Belt and Bible Belt — but within the Beltway was despised.
After Reagan survived being shot by deranged gunman John Hinckley, Jr., "it totally changed his relationship with the American people," said Shirley.
"Reagan lost half the blood in his body when he was shot. One lung collapsed, he was near going into shock, and he had a ‘devastator’ bullet in his chest that was one inch from his heart. If those aren't traumatic conditions, I don't know what is."
Reagan handled the trauma personally with increased devotion to his Christian faith and his faith in leading the United States through the existential struggle for survival against the "evil empire" Soviet Union in the Cold War.
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"You were touched by the hand of God," Georgetown University President Fr. Timothy Healy told Reagan afterward, according to Shirley's account.
Reagan stoically dismissed the spiritual reawakening and near-death experience publicly, however.
"Honey, I forgot to duck," he famously said to first lady Nancy Reagan, in cheeky dismissal of a trauma that nearly killed him.
"There is something irresistible about a man who takes an event so momentous and makes it seem small," said Shirley.
John F. Kennedy was a U.S. Navy hero who saved his PT-109 crew during World War II. He publicly deflected praise by saying, "They sunk my boat," when asked to explain his heroics.
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Shirley said Robert F. Kennedy's last words as he lay dying from a bullet wound in the head were concern for the safety of the people around him.
Teddy Roosevelt famously delivered an 84-minute campaign speech in 1912 with a bullet lodged in his chest after surviving an assassination attempt. His shirt was soaked in blood when he finally went to the hospital.
Shirley anticipates Trump emerging more faithful, more determined and more popular after his near-death experience, much as Reagan did.
"Reagan in a way reintroduced himself to the American people after he was shot," said Shirley. "They saw in him after that a grace under pressure they didn't have a chance to see before. It totally changed his relationship with the American people."
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Reagan went on to a 49-state landslide election victory over Democrat Walter Mondale in 1984.
