The mother of one of the three soldiers killed last week when two U.S. Army helicopters collided in a remote part of Alaska said her son loved his country and his family and lifted others up.

"Family was everything to him," Stacie Weaver told The Associated Press Monday of her son, Warrant Officer 1 Stewart Duane Wayment, of North Logan, Utah, who leaves behind a wife, Kiara, and three young children.

Wayment had a positive outlook and cared about others, Weaver said. He enjoyed the outdoors and was excited to be stationed in Alaska, to fly over rugged landscapes and see the northern lights and wildlife.

Two helicopters from the 1st Attack Battalion, 25th Aviation Regiment at Fort Wainwright, near Fairbanks, collided Thursday about 50 miles east of Healy when they were returning from training, the Army has said. Healy is about 80 miles southwest of Fairbanks.

An investigative team from Fort Novosel, Alabama, arrived in Alaska over the weekend and flew to the crash site Monday, said John Pennell, a U.S. Army Alaska spokesperson.

DEADLY US ARMY HELICOPTER CRASH IN ALASKA HAPPENED IN CLEAR SKIES, CALM WEATHER: REPORT

The Army has identified the soldiers who died as Wayment, 32; Chief Warrant Officer 3 Christopher Robert Eramo, 39, of Oneonta, New York; and Chief Warrant Officer 2 Kyle D. McKenna, 28, of Colorado Springs, Colorado. A fourth soldier was injured. That soldier's name has not been released.

Pennell has said that there were "no weather or visual constraints known of at the time of the collision."

The Army on Friday grounded aviation units for training after the crash, which occurred a month after nine soldiers were killed when two Army Black Hawk medical evacuation helicopters crashed during a nighttime training exercise in Kentucky.

Units are grounded until they complete the training, Lt. Col. Terence Kelley, an Army spokesperson has said. For active-duty units, the training is to take place this week, between Monday and Friday. Army National Guard and Reserve units will have until May 31 to complete the training.

ARMY RELEASES IDENTITIES OF SOLDIERS KILLED IN ALASKA HELICOPTER CRASH 

A commander at the level of a two-star general can authorize an exception, he said.

"The safety of our aviators is our top priority, and this stand down is an important step to make certain we are doing everything possible to prevent accidents and protect our personnel," Army Chief of Staff James McConville said of the decision to ground flight units for training.

New York U.S. Sen. Kirsten Gillibrand on Monday sent a letter to U.S. Defense Secretary Lloyd Austin requesting a review of helicopter crashes within all military branches that were fatal or that involved the loss of aircraft. She requested information on such accidents within the last five years.

She cited a 2021 New York Army National Guard crash that killed three soldiers during training. "Since then, we have only lost more service members to catastrophic incidents involving rotary wing aircraft," she wrote.

The Army on Friday said that while both the Alaska and Kentucky crashes are under investigation, "there is no indication of any pattern between the two mishaps."

Michael J. Fox has been an advocate for Parkinson's disease for over two decades following his diagnosis in 1991, when he was just 29 years old.

As the founder of the Michael J. Fox Foundation, an organization dedicated to finding a cure for the disease, Fox has helped doctors and researchers find a better understanding of how the disease progresses, and now he is revealing his own diagnosis could have come about because of something he did.

In a new interview, Fox was asked about a remark he made last November when receiving an honorary Oscar – Woody Harrelson had presented him with the award, and Fox said that the two of them had "done some damage" back in the '80s.

Specifically, he was asked if it was actually possible that he could have done some kind of damage that led to his Parkinson's diagnosis, and he answered, "Yeah, very possible."

MICHAEL J. FOX SAYS ‘I’M NOT GOING TO BE 80' AMID ONGOING BATTLE WITH PARKINSON'S DISEASE

"I mean, there's so many ways that you can ... that I could've hurt myself," he explained during an appearance on CBS Sunday Morning. "I could've hit my head. I could've drank too much at a certain developmental period."

He continued, "Most likely I think is that I was exposed to some kind of chemical. What we say is that genetics loads the gun and environment pulls the trigger."

Elsewhere in the interview, Fox said, "[Parkinson’s] banging on the door … I'm not going to lie, it's getting hard. It's getting harder. It's getting tougher. Every day it's tougher … that's the way it is. I mean, you know, who do I see about that?"

As the "Back to the Future" star suffers from the disease, he reflected on his perspective of mortality.

"You don't die from Parkinson's. You die with Parkinson's … I've been thinking about the mortality of it.… I'm not going to be 80. I'm not going to be 80." 

Fox continued to reveal how Parkinson’s has deeply impacted his life after a life-altering surgery.

MICHAEL J. FOX SAYS HE DOESN'T FEEL SORRY FOR HIMSELF BECAUSE OF PARKINSON'S DISEASE: ‘NO REGRETS’

"I had spinal surgery. I had a tumor on my spine … it was benign, but it messed up my walking … then, started to break stuff … broke this arm, and I broke this arm, I broke this elbow. I broke my face. I broke my hand," he said.

In addition to the interview, Fox wrote an opinion piece for USA Today titled, "Michael J. Fox: Do you have Parkinson's? New test is 'breakthrough' in diagnosing disease."

In his article, he wrote that "300 of the world’s top neuroscientists" are meeting this week in New York City, and that "The meeting’s focus has been electrified by one of the most significant Parkinson’s breakthroughs in decades, announced by PPMI [Parkinson's Progression Markers Iniative] and The Michael J. Fox Foundation just a few weeks ago: the discovery of a spinal fluid test that can objectively detect Parkinson’s in the cells of living people. It’s a first, and a monumental leap forward, for our disease."

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He explained, "The new test is remarkably accurate (this is especially rare in brain disease). It will allow scientists to unlock some of Parkinson’s deepest-held secrets — like how early cellular dysfunction begins in brain and body cells, what other aspects of biology are involved in risk, onset and progression, and why Parkinson’s symptoms and disease course are so notoriously different in different people. This will crack wide open our ability to develop next-generation drugs that will benefit everyone living with the disease."

"What’s more, we can detect the insidious biology unfolding well before any outward symptoms have shown up. (Historically, symptoms have been the first discernible sign of the disease. In my case, it was an innocent-seeming flutter in my right pinky finger.) Not only will it be possible for the disease to be diagnosed and monitored earlier, but we are standing on the threshold of being able to prevent it altogether."

He concluded his piece by writing, "This breakthrough belongs to everyone who’s already taken part [in the research], and to those who will in the future. But thanks to these activated participants, it is already transforming what’s possible for us all."

Fox News Digital's Stephanie Giang-Paunon contributed to this report.