President Donald Trump visited the U.S.-Mexico border in San Diego on Tuesday to inspect competing prototypes for the proposed wall between the two countries — and among the eight wall sections was one created by Fisher Sand & Gravel Co., headquartered in North Dakota.

“To have that opportunity to demonstrate to the president and all the people of America what we’re capable of building, it was just a great honor,” said Tommy Fisher, president and CEO of Fisher Industries — which includes both Fisher Sand & Gravel Co. and General Steel & Supply Co. — to host Laura Ingraham Tuesday night on Fox News’ “The Ingraham Angle.”

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“What makes your wall impenetrable for the people who really want to climb it?” asked Ingraham, referring to a statement by the president indicating he would be choosing prototypes that were least easily scaled.

“First of all, Laura, our wall is solid concrete … We took vision very, very serious when we put our proposal together,” said Fisher. “Agents have a 360-degree, panoramic, top-view down, so they have the advantage.”

He added, “The big difference with ours is, we’re building access roads for the agents. You’re not even getting close to our wall. Our wall has a road in front and a road behind.”

Fisher’s proposal is a 30-foot-high, cast-in-place wall composed of 6,000 psi, colored concrete, with structural grade 60 reinforcement steel inside. There are patrol roads on both sides of the concrete wall.

The American side can be backfilled to 29 feet, creating an elevated roadway, giving agents an obvious tactical advantage. That elevated roadway overlooks a second roadway on the opposite side of the wall. Beyond that lower road, nearest the Mexican border, is a “see through”-type barrier.

“We can build through the mountains as well,” Fisher said, noting that since his system requires no cranes, he can also build on rugged terrain.

Fisher predicts that if his company were to be awarded the large, 700-mile project, he would create thousands of jobs.

The CEO said he’d purchased land in California in rugged, mountainous terrain. He’s also placed a $274 million bid to build the first 15 miles of border wall, and intends to prove to the president and to America that “if you don’t have a complete border protection system, you do not have security.”

Fisher predicts that if his company were to be awarded the large, 700-mile project, he would create thousands of jobs. Fisher Sand & Gravel Co., the parent company, is ranked as one of the top 25 sand and gravel producing companies in the United States, according to its biography and background statements. Tommy Fisher is the son of the original founder, Gene Fisher. The company has more than 800 employees, with offices in Dickinson, North Dakota; Tempe, Arizona; and six other locations in the western U.S.

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“The larger [the wall] is, the better it is, because it’s very hard to get over the top. It’s really a deterrent from getting over the top,” said President Trump when reviewing wall prototypes on Tuesday. “These are like professional mountain climbers. They’re incredible climbers,” added the president, referencing those who attempt to cross the U.S.-Mexico border illegally.

If Fisher’s version of the wall is chosen, not only would potential border crossers need to scale a 30-foot wall, but they’d also have to get around two roadways of agents with a superior tactical advantage who could see their target coming as clear as day.

Michele Blood is a Flemington, New Jersey-based freelance writer and a regular contributor to LifeZette.