HELICOPTERS descended out of darkness on the most important counter-terrorism mission in US history. It was an operation so secret that only a select few US officials knew what was about to happen.

Osama bin Laden was hiding in a two-storey house 100 yards from a Pakistani military academy when four helicopters carrying US anti-terror forces swooped in the early morning hours.

Osama bin Laden was hiding in a two-storey house 100 yards from a Pakistani military academy when four helicopters carrying US anti-terror forces swooped in the early morning hours.