A court has seen dramatic CCTV footage of an alleged attempt to set off a bomb on a Tube train on 21 July 2005.
The film pictures Ramzi Mohammed getting on the northbound Northern Line train, and a bang taking place between Stockwell and Oval stations.
The footage, seen by Woolwich Crown Court, shows firefighter Angus Campbell remonstrating with him and Mr Mohammed running off into the crowd.
Six men deny conspiracy to murder and conspiracy to cause explosions.
They are Manfo Asiedu, Muktar Ibrahim, Hussein Osman, Yassin Omar, Mr Mohammed and Adel Yahya.
As well as featuring the confrontation between Mr Campbell and Mr Mohammed, the CCTV images shown to the court also show the chaotic moments after Mr Mohammed's alleged bomb failed to explode.
Mr Campbell confronted Mr Mohammed, shouting at him "What have you done? What have you done?"
Tube passengers can be seen fleeing from the train and some passengers running in pursuit of Mr Mohammed.
Earlier, Mr Campbell, 43, told the court how there was a loud explosion and he had felt "cowed".
Muktar Said Ibrahim, 28, from Stoke Newington, north London
Ramzi Mohammed, 25, from North Kensington, west London
Yassin Omar, 26, from New Southgate, north London
Hussein Osman, 28, of no fixed address
Manfo Kwaku Asiedu, 33, of no fixed address
Adel Yahya, 24, of High Road, Tottenham, north London
He said Mr Mohammed was screaming and shouting and there was smoke coming from behind him.
After leading a young mother Nadia Baro and her son away from the area, Mr Campbell returned to where Mr Mohammed was standing and demanded to know what a sponge-like debris lying smoking on the Tube carriage's floor was.
When told it was bread, Mr Campbell dismissed the claim, adding: "It was nonsensical, it didn't make sense to me."
He then shouted - "swearing vociferously" - at the accused: "You are scaring us, I want to help you, I can help you, but I want you to lie down."
"I needed him to be submissive to me," he said.
Mr Campbell pulled the emergency alarm lever and the train stopped at Oval station. Seconds later the doors opened and Mr Mohammed ran off.
"Perhaps I could have intercepted him," said Mr Campbell.
But Mr Justice Adrian Fulford, said: "It is not easy for you, Mr Campbell."
Mr Campbell and Ms Baro were among up to 30 passengers on the train when Mr Mohammed allegedly tried to detonate an explosive mix of hydrogen peroxide and chapatti flour.
Angus Campbell spoke of having felt "cowed"
Ms Baro, who was with her nine-month-old son at the time, told the court she was in a panic and thought she was going to die.
She said she noticed the person next to her was wearing a rucksack then she heard a bang and something came out of the bag and fell onto the floor.
Ms Baro described the substance coming from the rucksack as being like a sponge or a foam with bits of nails on it, and that she could smell something like the smell of oil.
Retired engineer George Brawley described how he grappled with Mr Mohammed who "came running up the platform like Linford Christie."
"I grabbed him by his forearms. I did not know what to do to stop him. But he broke free easily. He got past me without breaking step. I did my best but he was too slippery," said Mr Brawley.
Six men deny charges of conspiracy to murder
He pressed the stop button on the station's escalators and although Mr Mohammed stumbled he recovered and carried on.
Former soldier Arthur Burton-Garbett, 72, told the court he leapt from the train in pursuit of Mr Mohammed.
Mr Burton-Garbett said he smelt the distinctive odour of cordite, which he recognised from his time testing ammunition in the army.
He said he was about nine or 10 steps behind Mr Mohammed on the escalator but "started to run out of steam".