Ambushes - suicide missions - fugitive killers. Snipers are called upon to tackle the world's most extreme missions. One mistake or missed shot could be fatal. 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 during 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. Join History for this chillingly realistic insight into what it takes to stay alive when you're outnumbered, outgunned, and only one shot away from death.