.
The explosion shattered windows, sending glass flying everywhere, before workers from the security station began running into the terminal.
"They had blood all over them, crying," Duncan added.
"I didn’t know what to do. I just copied what everyone else was doing, and everyone else dived to the ground.
"I was a bit panicked but luckily there was a German guy there keeping me calm.
"We turned round, and at the check-in part there was a man dressed all in black. He didn’t cover his face or anything.
"He had a Kalashnikov and was shooting at the police, who had arrived by that point. It all happened within five minutes."
The Scot said following the first explosion he jumped up and headed for the exit - but a second blast sent him flying to the floor again.
He says he was lucky that "somehow I hadn't been injured".
The first CCTV clearly showing the Istanbul suicide bombers has emerged Other footage shows a man dressed all in black stalking the arrivals hall whle appearing to spray bullets at terrified passengers Duncan called his wife-to-be following the second explosion - but it was still 20 minutes until he finally made it out of the terminal to safety.
He says he stopped on the way to warn a group of Somali travellers not to walk into the attack.
He claims cops were shouting at confused survivors to keep moving away from the building so Duncan returned to his flat six miles away where his panicked partner Kubra was waiting for him.
His mates however were still at the airport - having only just arrived as the attack began.
Laurence, 23, told the Daily Record: "By the time we got to passport control there were hundreds of people waiting on the other side and it felt like there was something wrong.
"Then a guy on the same side as us shouted: ‘Everyone get back! Everyone get back!’ We could see people running on the other side.
Broken glasses is seen inside the Turkey's largest airport Credit: Getty Images A worker cleans the blood splashed on the roof of the international departure terminal at the country's largest airport Credit: Getty Images People bury the coffin of airport taxi driver Mustafa Biyikli, who lost his life in the following the suicide bomb attack in Istanbul Ataturk Airport Credit: Getty Images "We waited maybe another 40 minutes, then they started letting people through. We were herded through the terminal by hundreds of armed police.
"At first there was just a bit of ash on the floor, but then we saw the arrivals hall. It looked like something from a movie set.
"The roof had caved in, there was shattered glass everywhere and there was blood all over the floor.
"That’s when we realised the scale of what had happened."
He and pal Sean managed to eventually call Duncan and tell him they were okay - and later arrived at their flat unharmed.
Despite the devastating terrorist attack on the city's airport - and how close he came to death - Duncan says he has no plans to leave Turkey.
He added: "Istanbul is my home. I have a fiancee here and we’re getting married in July."
Turkey declared a day of national mourning over the deadly attack at Istanbul's international airport which was blamed on ISIS jihadists Credit: Getty Images Relatives of one of the victims of the blast at Istanbul Ataturk Airport Credit: Reuters But another Scots expat, Engish teacher Sarah Conlon, 30, has made the painful decision to give up her adopted home.
Glaswegian Sarah, who has lived in Istanbul for five years, said of the latest attack: "It’s not new for us. This has happened regularly this year.
"There was a bomb really near my house in March, and one recently near the university campus where some of my friends work.
"People here are just worried and really sad. Istanbul is notably more quiet and the tourists seems to be in smaller numbers.
"I feel sad for my beautiful adopted city. It’s been through a lot and it hurts."
Torment: The daughter (centre) of Siddik Turgan, a man killed in the ISIS massacre, breaks down as her father's coffin is carried during his funeral ceremony in Istanbul Credit: Getty Images Relatives of Siddik Turgan, a custom officer at Ataturk Airport who was killed in the attacks Credit: EPA Three suicide bomb blasts ripped through Ataturk Airport in Istanbul at around 8pm in a Brussels-style massacre that has killed at least 42 people and left 239 others injured.
Thirteen foreign nationals are among the dead, including an Iranian and a Ukrainian, as well as 23 Turkish citizens.
The attackers stormed the building while raking passengers with bullets and then detonated their explosives at the entrance of the international terminal before entering the X-ray security machines.
No one has yet claimed responsibility for the attack but experts believe it is the work of ISIS militants.
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