Written by CNN Staff

Laura Hammersley & Vasily Panov: The 'Kremlin Kids' called travel back home 'almost unbearable'

An online video showing many of the evacuated Americans who had to fly home to the US following the nerve agent attack in Salisbury, UK have been shared more than a million times.

One emotional traveler, Laura Hammersley, talks about how her life has been "devastated" and how her family life has been "destroyed" by her return.

Her father, Mike Hammersley, also went missing shortly after the attack, although he has since been located and is safe and well.

Laura, and her twin sister Laura Eckhardt, were evacuated on a US Airways flight on Wednesday, a day after the UK announced the first convictions for the poisoning of former Russian spy Sergei Skripal and his daughter Yulia.

In an emotional Facebook video shared Thursday, her brother Vasily Panov says the situation has been "almost unbearable."

"Right now we don't know if my parents will be back," he says. "We don't know what's going to happen next."

Another video seen by CNN shows a shoe, left behind by his brother Vasily Panov as he left Salisbury en route to Gatwick airport on Wednesday. He shows another shoe on his way home.

Although he left behind the shoe and other possessions, he didn't leave behind any friends and family after leaving his home.

"I really don't know what's going to happen," Vasily Panov says in the video. "How are we going to get in touch with them? How can we find them? We're not sure who the whole squad is. It's really scary."

'I wasn't prepared'

Ahead of the trip home, Nancy Porter Lefkowitz warned CNN that it could be "life-changing" for her and her husband, Chris, who were moved to Salisbury to help their parents - aunts and uncles - who fled Russia to escape harassment.

She continued: "We're not living here so our homes are not safe. We could get upset and try to help out, but we really don't know."

Chris added: "It's frightening being on the other side of the world, with no knowledge of what's going on here."

Nancy Porter Lefkowitz told CNN about how she and her husband were evacuated from Salisbury earlier this week.

"I wasn't prepared," she said. "All that I had was what they told me and nothing about how they were going to do it."

She said she didn't know what was going to happen once she and her husband returned.

"We have no idea how this would work. You can't imagine the experience," she said.

Nancy Porter Lefkowitz, center, with other evacuated Americans, in Salisbury on Thursday.

The safety of all evacuees was described by Rear Admiral Jim Syring, the director of the Joint Chiefs of Staff, as "our top priority."

"For some Americans, their lives may well have just come to an end," Syring said in a statement. "We have been working since Friday to ensure their safety, and we will continue to do whatever is needed to ensure they safely return home."

Salisbury Borough Council CEO Rosita Landreth said in a statement she and the council are aware of the conditions they face.

"We deeply understand that emotions are running high," she said. "There are emotions we will have to put into perspective as we count the cost of the event."

'No further checks'

The consequences have already been steep for the town, as the injured couple's daughter, Yulia, remains in a critical condition in hospital.

Glenys Stacey, who moved with her husband to Salisbury, told CNN their business, the Luxton Sheep Farm, was destroyed as a result of the evacuation.

"It was dreadful. There was no activity, no staff, and, as soon as they said they were coming, they were gone," she said.

Stacey said it was difficult to gauge how many people evacuated, "just because there were so many".

"It's such a massive town," she said. "I think it was just a particularly nasty couple of days for them."

The BBC reported Tuesday that British ministers would launch a major investigation into how Russians believed to have carried out the attack could have been able to slip out of Britain.