Heart-stopping moment Good Samaritan leaped onto subway tracks to save man, 63, who fell - as other passengers stood and watched

The incredible moment a Good Samaritan fearlessly leaped onto live subway tracks to save a 63-year-old man who had fallen as others stood around helplessly watching has been captured on video.
Christopher Knafelc, 32, was sitting several yards away at a North Philadelphia subway station on Thursday afternoon when he saw what appeared to be a man tumble off the platform.

Shocking sight: Christopher Knafelc, 32, was sitting on a bench, far left, at the North Philadelphia subway station on Thursday when he saw a man walk straight off the platform several yards away, right

Rescue: Without a moment's hesitation Mr Knafelc hurried to the platform's edge and jumped down after the man as a crowd began to gather above

Aware: The 32-year-old estimated having five to 10 minutes before the next train came but also was able to alert someone to stop all oncoming traffic, Of all the people standing around, some just feet away, Mr Knafelc was the only one to not only rush to his aid, but immediately jump down beside him - a man he didn't know. 'I jumped down. He was in pain. He was in agony,' Mr Knafelc said.

'I knew I had about five to 10 minutes until another train,' he said. 'I told the guy in the booth to suspend southbound trains. I already had a plan in mind if a train came to roll underneath.'

As they waited for rescue crews to arrive, with the train traffic securely halted around them, he says he tried to keep the man's head and neck stable in the meantime. 'I kept him talking. I said are you all right? What hurts? He didn't thank me but I know he was thankful,' he told CBS Philadelphia.