Lennon was shot dead by Mark Chapman outside his apartment building in New York City in 1980, while Harrison was fortunate to survive a knife attack at his English mansion in 1999
But brave McCartney refuses to become a paranoid superstar and lock himself away from the world - he believes fate determines the timing of his death.
He says, "I never get worried about things like that - it wouldn't stop me doing what I do. When your time's up, your time's up. Who knows when that is?"