Heading into his inauguration ceremonies, incoming President Donald Trump is "amazed and thrilled that the American people entrusted him to take this country in a different direction," his oldest son, Donald Jr., said Friday morning.
"The experience for myself, for my father, obviously, for our whole family has just been incredible," said the younger Trump on ABC's "Good Morning America" program.
"When you're in this thing for 18 months, almost really two years that we're doing it every day, it takes a while to actually set in. And coming in yesterday, going to Arlington, standing on the steps of the Lincoln Memorial, it really all set in for the family. It was very special."
The president-elect has been working on his speech for some time, Trump said, and his father will emphasize that he'll be the president for all Americans, not a "select few."
"He's been making that point a long time," said Trump. "I don't think it gets the coverage it deserves. He's been saying that for quite some time, but this is about one country and all of its people and that's what he's going to do and he's going to do a phenomenal job at it."
Meanwhile, Trump said it's one thing to be involved in a campaign, but after meeting with President Barack Obama, that drove home the "gravity of the situation" of becoming president.
"He's had a remarkable life, but relative to all those things, nothing could be more important than that for him. Just understanding that magnitude and watching that evolution bit-by-bit over the 18 months, two years of this race, it's been incredible," said Trump.
Meanwhile, he said his father is not a person who becomes nervous easily, "but I imagine that this is a pretty big stage. He's one of those rare types that he can harness that energy and usually turn it into a positive, so, I see him usually do better under pressure than the other way."