Watch HDToday. He's the deadliest weapon on the battlefield, but his next shot could be his last. Outnumbered - Outgunned - Behind enemy lines - What happens when the tables are turned and the hunter becomes the hunted? This is SNIPER: DEADLIEST MISSIONS. From the treacherous jungles of Vietnam and the bloody war zones of Iraq, to danger high in the skies of the Alaskan wilderness, this two-hour special puts you behind the scope with the men who pulled the trigger on some of the deadliest missions in military and law enforcement history. Gripping firsthand accounts, 3-D graphics and jaw-dropping shooting demonstrations take you inside the shadowy world of top snipers and the missions that made them living legends. Outmanned and out-gunned - will the next shot be their last?