The hero Aussie doctor and diver who helped rescue the Wild Boars soccer team from inside a Thai cave used his accent to help relax and soothe the boys during his rescue mission.
"The diving conditions were extremely challenging, there was poor visibility and responsibility for another human being's life".
"We congratulate the Royal Thai Government for ensuring the successful recovery of the members of the team", the Department of Foreign Affairs said in a statement. "They thought they'd only be an hour", Banpot Korncam, father of the 13-year-old captain of the "Wild Boars" team, told media.
John Volanthen returned to his home country after helping rescue the 12 boys.
"Meanwhile on the ground, the Thais and worldwide community sent in swarms of men and women to provide everything from catering, communications, media and of course the huge teams of workers filling the cave with tonnes and tonnes of equipment to try and lower the water and sustain the diving operations", Dr Harris wrote.
"Local climbing and rope access workers rigged the dry cave section for that part of the rescue and scoured the bush for more entrances to the cave".
The cave rescue was a unsafe operation.
The group ventured into the vast cave complex in the northern province of Chiang Rai after football practice on Jun 23 and were trapped when a rainy season downpour flooded tunnels.
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"We're not heroes", Volanthen said, despite headlines in the British newspapers describing him and the other worldwide rescuers as just that.
British cave-diver John Volanthen walks out from Tham Luang Nang Non cave in full kit without any response to reporter's questions, June 28, 2018 in Chiang Rai, Thailand.
"He's got a very bouncy Australian accent, and they seemed to find that quite relaxing and reassuring".
"We were very pleased and we were very relieved that they were all alive but I think at that point we realised the enormity of the situation and that's perhaps why it took a while to get them all out", he told Sky News when he arrived at Heathrow airport.
He added: "We are not heroes".
Dr Harris and long time dive partner Craig Challen are up for our highest civilian honour, the Cross of Valour. Experts say the children will bounce back, while Chanthawong may struggle to cope with feelings of guilt.
They survived on snacks they brought with them and by drinking water running down cave walls, authorities said.
The IT tech said that the divers were not heroes and directed attention to the rest of his team and the Thai Navy Seals.