Like Carter, Mr Sickmann went on to focus on charitable work. He said he was inspired by the former president to set up Folds of Honor, which provides scholarships to families of Americaʼs fallen or disabled military and first responders.

“President Carter was a good Christian man, married to his wonderful wife, and continued his life of service. I don’t know if I’ll ever be as good as him but I hope to be able to do the same thing.”

The charity was set up to honor the 8 US service men who were killed trying to rescue the hostages. In 1980, the mission, dubbed Eagle Claw, failed disastrously after three helicopters malfunctioned. It was the last straw for Carter politically – although he won the Democratic nomination, he was wiped out in the election by Ronald Reagan that year.

But while the Iran hostage crisis would be a dark mark on Carter’s political legacy, Mr Sickmann said he owes his life to Jimmy Carter.

“Morning, noon, and night, for 444 days, I never prayed so hard in my life, hoping that God was on our side,” he said.

“But also President Carter kept us alive. He kept us in front of the world, making sure that people were praying for us (too).”