Frank Giaccio, 11, of Falls Church, Va., is surprised by President Donald Trump, Friday, Sept. 15, 2017, as he mows the lawn of the Rose Garden at the White House in Washington. The 11-year-old was focused on the job at hand and didn’t notice the president until he was right next to him.Frank Giaccio, 11, of Falls Church, Va., left, is assisted by a member of the National Park Service, and his father Greg Giaccio, as he gets back to mowing the lawn after President Donald Trump said goodbye, Friday, Sept. 15, 2017, in the Rose Garden at the White House in Washington. Frank Giaccio, 11, of Falls Church, Va., left, is accompanied by President Donald Trump as he mows the lawn of the Rose Garden, Friday, Sept. 15, 2017, at the White House in Washington, with his father Greg Giaccio.

WASHINGTON (AP) — An 11-year-old boy in khaki shorts and a red polo shirt got the lawn-mowing gig of a lifetime Friday when President Donald Trump put him to work in the Rose Garden.

Frank Giaccio, who goes by the initials FX, was so focused on doing his job that he didn’t even notice when Trump emerged from the White House to check out his work.

FX, who lives in the Washington suburb of Falls Church, Virginia, kept right on pushing the mower in a long, straight row as Trump walked alongside him.

When the boy finally paused, the president called him the “future of the country right here” and asked what he wants to be when he grows up. “A Navy seal!” Trump exclaimed. “Well, he’ll make it.”

Standing with FX and his father, Trump added: “We’ll bring them into the Oval Office. Maybe he’ll be president.”

Just how did FX make it to the Rose Garden? The White House said FX had written to Trump to say he admires the president’s business acumen and runs his own neighborhood lawn-care business.

“It’s probably the biggest day of my life so far,” FX said afterward.

He added that his day was “jam-packed” with media interviews, watering plants, mowing the lawn and visiting the Oval Office with his dad. “It was a lot bigger than I thought,” he said.

FX said he normally charges $8 per lawn but decided to mow the White House lawn free of charge.

According to a letter that White House spokeswoman Sarah Huckabee Sanders read to reporters, the boy wrote that it would be his “honor to mow the White House lawn.” He also enclosed a menu of his services, which include weed-whacking.

For this job, FX donned goggles and ear plugs and pushed a mower belonging to the National Park Service. He got to keep the black gardening gloves he used as a souvenir.

“My dad didn’t think I was going to meet the president at all — I was just going to mow the Rose Garden. But the president came by and said hi,” FX said.

Trump later tweeted: “THANK YOU for doing a GREAT job this morning! @NatlParkService gives you an A+!”

The tweet included video highlights of FX’s White House visit — complete with a photo of him posing with his elbows on the Resolute Desk in the Oval Office next to Trump.

Frank “FX” Giaccio-
On behalf of @FLOTUS Melania & myself, THANK YOU for doing a GREAT job this morning! @NatlParkService gives you an A+! pic.twitter.com/135DxuapUI

— Donald J. Trump (@realDonaldTrump) September 15, 2017

Frank Giaccio, 11, of Falls Church, Va., is focused as he mows the lawn of the Rose Garden, Friday, Sept. 15, 2017, at the White House in Washington. The 11-year-old wrote President Donald Trump requesting to mow the lawn at the White House. Frank Giaccio, 11, of Falls Church, Va., is surprised by President Donald Trump, right, Friday, Sept. 15, 2017, while mowing the lawn of the Rose Garden at the White House in Washington. The 11-year-old, who wrote the president requesting to mow the lawn at the White House, was so focused on the job at hand the he didn’t notice the president until he was right next to him.