Scarecrow: A Shane Schofield Thriller (Scarecrow Series)

It is the greatest bounty hunt in history. The targets are the finest warriors in the world-commandos, spies, terrorists. And they must all be dead by 12 noon, today. The price on their heads: almost $20 million each.
Among the names, one stands out. The enigmatic Marine, Shane Schofield, who goes by the call-sign "Scarecrow." Schofield is plunged into a race around the world, pursued by a fearsome collection of international bounty hunters. The race is on and the pace is frantic as he fights for survival, in the process unveiling a vast international conspiracy and the terrible reason why he cannot, under any circumstances, be allowed to live!
He led his men into hell in Ice Station. He protected the President against all odds in Area 7. But this time it's different, because he is the target. With all of his trademark action, Matthew Reilly continues to establish himself as one of the top thriller writers of today.