Royal Marine...SAS marksman...Elite soldier...

Rob Maylor has seen action in the world's most dangerous combat zones. From East Timor and Iraq to Afghanistan, he has been places where no-one else wants to go.

He was there when a Black Hawk helicopter crashed, drowning two of his mates. He was there at Australia's biggest battle in Afghanistan when a Taliban ambush left him shockingly wounded.

He has walked for hours, sometimes days, through hostile country until he has found the right position, sometimes more than a kilometre away from this target, then when the moment is right he aims, and with absolute precision, puts the bullet just where it is going to have the most effect...

This is a gritty, no-holds-barred behind-the-scenes look at life on the front line from an elite SAS sniper.