US Navy veteran Jonny Burnell spent 111 days aboard the battleship USS Vinson during the US war with Afghanistan in 2001. His role as a Navy photographer allowed him to visit crew throughout the ship, unlike most sailors who are confined to parts of the vessel where they work. In an age before digital photography, troops were often eager to get their picture snapped whenever they saw him. This was reported by Qazaqyia.kz citing BBC News.

This was reported by Qazaqyia.kz citing BBC News.

Over more than three months aboard the USS Carl Vinson, he witnessed a change among the crew as their excitement and energy faded to what he called a "sadness". "There was one point where there was a visible kind of deadness in the shipmates' eyes", he recalls. "I still think the hardest part of my job was watching the sadness in people's faces every frickin' day."

Burnell told the BBC he's been watching on the brink of tears as concern mounts about conditions aboard the USS Abraham Lincoln - which has been deployed as part of the US-Iran war since 11 December, more than double his deployment aboard the Vinson.

Military on the Lincoln are reportedly contending with food shortages, broken plumbing and exhaustion, according to two US publications that cover the military - the Military Times and Stars & Stripes. Family members of sailors onboard have expressed concern about their mental health deteriorating due to the conditions, with some sailors having reportedly attempted to jump overboard.

Military officials have disputed that there are severe issues afflicting the ship, and some veterans have also suggested that the accounts in the media are overblown. The reports in the media are largely inaccurate, and "99% hype," says retired Navy Lt Commander Steve Rogers, Director of the Association of the United States Navy (AUSN).

As part of his job for the AUSN - a non-profit that works to help US Navy servicemembers - he has been speaking to relatives of troops on the Lincoln. He says its normal for families to worry about their loved ones at war, and that the troops are well prepared for the situation they find themselves in.

In an interview with the BBC, a relative of one sailor on the Lincoln said that their family member had lost 65lbs (29kg), and has been suffering from exhaustion because of the constant noise and vibrations.

Asked about the situation aboard the Lincoln on Friday, Trump dismissed the reports, saying the deployment is "not nearly long enough". On Sunday, the head of US Central Command, which oversees operations in the Middle East, released a statement saying that of the 11 active aircraft carriers in the US military "the Lincoln currently has among the lowest number of cases related to mental health".

"This doesn't mean all is perfect," said Admiral Brad Cooper, adding that "service at sea for long periods isn't for everyone".

"It is uniquely challenging and tough," he continued, adding that "mental health is another aspect of individual health and requires our attention just like physical health and spiritual health".

Burnell, the former military photographer, says from his prior experience, he believes many members of the crew aboard the Lincoln don't get the chance to even visit the top deck due to their duties below. These troops could go long periods without seeing the sky.

One colleague on the USS Vinson, which Burnell described as a floating prison, did everything he could to get kicked off, including selling drugs and starting an "underground rave club", he says.

In Burnell's tiny bed, which troops referred to as "coffin racks", there was not room to turn over, and the cables that catch and slow aircrafts as they land ran through a wall right behind his head.

"It was just non-stop noise. The ship is just always loud," he says. Planes are always landing or taking off and guns are always firing, he adds.

It remains unclear what the conditions on the Lincoln are like now. A crew from CNN visited last month, and did not discover any widespread issues during the three days on board. Several troops mentioned being forced to ration food, and losing weight over "many months", but when CNN boarded on 7 July, "food was plentiful," the outlet reported. Showers were also hot, although there were some signs of mould.

The US has deployed another battleship to relieve the Lincoln, which should arrive in the Middle East in another week. The replacement ship, the USS George Washington, has had it's own history of mental health challenges.

In 2022, a spate of suicides aboard the ship - while it was still docked at a port in Virginia - led to a military inspector's investigation. The conclusion of the investigation found the deaths were not caused by any one issue, but were the result of several problems related to poor living conditions.

The report, released in May 2023, found that the Navy's top brass had "let our standards slip - and in doing so we let our people down."

Dr Harold Kudler, the former head of mental health policy for the US Veterans Administration (VA) says the issue has been studied by the US government for years. Kudler says the isolation of being aboard a ship, with moments of prolonged boredom followed by "extreme alertness", can amplify mental-health struggles.